I think this might have been already said, But if you love the L64 Grace, you will love this disc!

Feel: The cosmic Neutron Plastic has a nice feel to it, Stiff, grippy with great durablility.

Flight: As stated earlier, this disc flies similarly to the Orbit Grace, Straight Flyer right out of the box. 

I had a couple Waves that were my top 2 discs for a couple seasons, but one got a bit too understable, and the heavier, more reliable one ended up missing somehow last fall, so I've tried a variety of discs to find good replacements for them. I've only recently started trying out the Trace more, hoping it would be (and remain) a tad more stable than the Waves over their respective service lives. So far it has been more than a tad more overstable. It may just need to get beat in a little bit to be the disc I'm hoping for: Right now it behaves more like my Destroyer, except that my Destroyer flies a bit better/farther for me before fading. This could be due to the heavier weight, though, rather than anything about the disc design. I do like the feel of this plastic, and thus far it shows signs of holding up well under wear -- and I'm always a big fan of durability.

Decent disc but not what I really wanted. I bought a Cosmic Neutron 175 gram and the plastic feels great. However it is pretty flat topped and very high wing. Throwing it the flight is very OS, not as neutral as I was hoping. I might keep it in the bag as a headwind disc but won't buy anymore. Feels like it flies 11/4/0/3. I do have medium power (400 feet with a good DD) so it's not me either. 

I had been throwing the Innova Wraith and was getting frustrated with how much movement it had. I won the Trace as a CTP award and decided to start throwing it and was so happy that it stayed on the line I put it on. 
 

I have been throwing it for about a year and a half now, and I love how controllable they are, and I love the Sarah Hokom signature series in particular. 

I would recommend the Trace to anyone, no matter what their skill level is. 

As a forehand thrower, I was looking for a disc that will turn on its own when thrown straight and flat.....This does it....No need to Anny or whatever....I just throw it right at the basket, it turns on its own, comes back, and I Love it......

Disc: Streamline Cosmic Neutron SL Trace, 170g

Feel: I like the way this disc feels forehand, and it also feels pretty good backhand! The plastic is grippy, but not soft. And it’s very durable. The disc is rather flat, which makes it a pretty decent thumber disc (Although there are much better discs if you’re looking for something to throw thumbers with). One can definitely tell that it’s a part of the MVP family, I like it.

Flight: This is the most forgiving distance driver ever. I have never had a disc that can get a mediocre result out of an early release, a good result out of a late release, and a perfect result out of a good release. It flies beautifully straight, with a soft fade at the end. I’ve found myself using this for uphill shots a lot, or shots where I want to throw something high. I feel a tad more comfortable with my Star Destroyer for high shots (I really need to stop referring to the Star Destroyer in every single review I’ve posted), but this is a close second. The consistent, soft fade allows me to throw this disc way up into the sky and still have an idea of where it is going to land. I’ve thrown this disc low a few times, and it handles that pretty well. In fact, I absolutely blew a release the other day, and this disc hit the ground in the middle of the fairway about 50 feet out. Then something miraculous happened. It flew 300 more feet at a constant elevation of 6 inches and was parked underneath the basket. Best skip of all time. This disc has a pretty sick glide, I’d honestly say it glides more like a 6 than a 5.

Overall: This is a great disc for intermediate players. I don’t think many pros would find it as useful as other discs out there, as they’d probably have to throw hyzer flips with it. And perhaps for people out there with cannons for forehands, this wouldn’t be the greatest. But for your average-good disc golfer, this is a wonderful disc. Beginners obviously shouldn’t be throwing this until they’ve learned good technique, but that’s not the disc’s fault, that’s because no beginner should throw distance drivers. I love this disc, it seems every disc MVP puts out there is incredibly high quality, and it’s the same for the Streamline discs I’ve tried thus far.

I’ve had this disc in 3 different plastics and a few different weights. But they all fly about the same, except for the lighter weight version. Just for reference, I throw around 330-350 max D on course, smooth and with pretty good mechanics. I’m so close to pushing into that 400-450 range, but not quite there yet.

I have a DGPT Neutron at 174g, and it’s a straight to fade control driver. No turn, and has around 2 fade. It’s VERY stiff and this version of their Neutron plastic I’m pretty sure is made of some sort of indestructible material. It’s insane how stiff and durable it feels. Never felt anything like this. Handles wind fairly well, but once the wind gets around 10-15 or above, it’s time to pull out the more OS discs. 11/5/0/2.5

A Sarah Hokom Cosmic Neutron 169g, and it’s also a straight to fade control driver. Also very stiff. Maybe even stiffer than the DGPT version, if that's even possible! Pretty stable in most wind unless it gets heavier, like above 10mph and into a headwind. 11/5/0/2

Had a Proton 174g, and it was a straight to strong fade control driver. Not as long as the other 3 I’ve had. Was more like a PD or something along those lines. Went straight for a bit, then fades fairly noticeably, but always pushing forward. Handles wind fairly well, but once the wind gets around 10-15 or above, it’s time to pull out the more OS discs. Probably more like a 11/5/0/3 than the #’s indicate.

And then I HAD a sweet regular run Neutron at around 168g. And it flew a lot more like the #’s suggest. It had some give and flex to it, but still somewhat stiff overall. I’d say it felt between a normal S line and a normal C line type plastic. Almost like Kastaplast K1 plastic. It had a baby turn on really good rips, but then always came back. Just not as hard as the other ones I have. Depending on the angle you threw it, it would be more straight to fade, or sometimes get a small S shape and get more distance. I threw it into some super tall weeds and couldn’t find it last year. And nobody called me about it (even though my name on # is on it. SICK and tired of greasy Disc thieves). It was my favorite of the bunch. I literally couldn’t throw if wrong if I tried. The Trace isn’t a Max D driver, but I’ll take this type of control with the distance all day every day over any minor gains in D from a more uncontrollable disc (like my Prodigy D3, haha). 11/5/-.5/1.5

Overall I think this is one of THE most underrated drivers on the market! I’ve gone through quite a few of the major brands drivers, and this one is hands down the best overall. Not the longest, but the best. You may gain 5-30’ by using a Max D driver, but you won’t get the control and ease of use this disc provides. It's SO easy to get good distance and accuracy with this disc. It's about as throw it and forget it as you can get. And as in real golf, being in the fairway or where you wan to be, in order to have a good approach shot is MUCH more important than a tiny bit of extra distance at the cost of control.

And It just feels SO good in your hand, the plastic from MVP/Axiom/Streamline is literally unmatched, and it’s SO smooth and perfectly made. Kastaplast is the only plastic that comes close, and this is better! The rim shape and width feels amazing, and isn't so wide that it feels weird, like those 2.3-2.4 width rim Max D drivers. It also absolutely RIPS on FH’s and comes out SOO clean. It’s also almost completely flat on top like most MVP/Axiom/Streamline drivers. So that also has a huge benefit for FH throwing. I recently just overthrew a 315’ hole that you have to sidearm. It was about 5-10’ off the ground the entire way and just SAILED past the basket area that drops off and down going really fast still. It luckily hit a few trees and knocked it down about 50’ long and right of the basket. But it would have been a 350-380’ FH drive if the basket was on flat ground! I’ve NEVER thrown a FH farther than about 300’ at the best, if that gives you an idea of how good this thing works on FH’s.

And it’s so versatile off the tee. If you’re a beginner to strong intermediate, it would be hard to find a better overall driver than this disc. No matter how well or poor I throw it, it turns out just fine to amazing every time! It’s almost like a cheat code on long holes. Can’t recommend this disc enough. And if you get 2-3 in a few different weights or plastics, you could have all your Driver needs met with one mold! The only people that won’t find this disc absolutely amazing is a bomber or pro. They’d probably turn this thing over and only be able to drive with it as a hyzer flip disc. But for everyone else, this is THE disc to get!

Received the Cosmic Neutron Trace as a mystery disc and have not put it down since. This was the first disc I have outside my go to brand and it has me rethinking everything. The plastic is some of the best quality I have felt so far. It took me a few rounds to start throw it right but now the flight for the Trace looks as nice as the plastic. I primarily use the Trace in forehand applications. Mine has an extremely flat top.

Cosmic Neutron 169g.  First off I bought the disc because its the most beautiful plastic I've ever seen and anyone who sees it comments on it.  That aside, I'm very surprised at how far this thing flies.  It is stable but not overatable and as such requires a flat release but if you give it that the disc will fly exactly as the numbers indicate with a slight turn and then slight fade ending just left (rhbh) of dead straight.  Slight hyzer release will result in a flip up  dead straight with fade, slight anny will hold for most of the flight and fight back just a bit at the end.  It's very very controllable and while good form makes a difference with any disc, this disc seems to respond better to good form than any other in my bag.  To use a ball golf analogy this disc gives you the feedback and results of a forged blade.

A great disc but the neutron and cosmic neutron versions seem to be more understable than numbers say. I turn it over just as easily as my wave. Gonna get a plasma and hope its slightly more stable