The M model s is a very underrated midrange. It flys slightly overstable when brand new, and beats into a straight flyer. This disc has plenty of glide, and is very dependable forehand or backhand. It's a better version of what the M3 is supposed to be. I tend to turn over the M3 into a headwind, but the M model s holds dead straight. I find myself reaching for this disc more than any other mid in my bag. 

The glow plastic works as well as any other disc.  Not klastaplast glow but it hung with my MVP and Gateway for brightness and glow time.  Not as overstable as a Roc3 despite their similar flight numbers, so it will flip up a little under power or on a flick, and the fade is moderate.

I've always been a big fan of Prodigy's midrnage discs. I think they're highly underated, and the new Ace Line mids are no different. Compared witht he original Prodigy midranges, have a more shallow, less deep feel. The Model S has a nice flat top to it with a comfortable feel that makes it eay to release the disc at the angle you intend. Flight wise I'd say this disc is comparable with the M4. The Model S is a great straight flyer when thrown flat, holds an anhzyer line and holds a hyzer line if thrown gently. When thrown with a lot of snap and power the M Model S will hyzer flip for forehand throws for me. 

My blue Dura Flex M Model S has printed flight ratings of 6/4/0/3 which I think are way off. I give it ratings 5, 5, -.5, 1. This disc is really straight, perhaps even slightly understable for my moderate arm. It has a very modest fade typical of midrange discs. 

The Dura Flex plastic has a good feel to it, but is definitely not as durable as Prodigy 400 or higher grade plastics. This plastic has a good grip to it but is not so sticky that it affects release.

Overall the Model S is an outstanding all purpose midrange. A great disc if you are going to use only one mid as it can be shaped for almost any type of shot. It's not anything new or revolutionary to  the game, but at it's price, this is a five star disc. If you're looking for a quality budget disc that can be used for multiple shots, consider the M Model S. 

This disc flies pretty much how the numbers show.  Reliable fade.  The plastic is nice, kind of reminds me of Infinite's I-blend plastic, but it glows!