This is my go-to putting putter. I used to putt with the Aviar and it was a bit too understable for me. The OG firm plastic is still grippier and softer than innova's DX plastic. This putter is more overstable than the Aviar, and a little bit deeper. Which I did not think I would like, but I absolutely love the way this disc feels. I especially love putting from circle 2 with these and I believe they have significantly helped my long- putt game.

If you are looking for an aviar alternative that has a great feel and a bit more overstable I highly recommend trying out the Telos. 
 

If you are used to the DX plastic try the OG Firm. 
I haven't tried out any of the premium plastics but the other plastics were way too grippy and soft for me. 
 

As far as throwing putters go- I don't love it. I haven't thrown any of the premium plastics, they would likely be a lot better, but they tend to turn over for me and be a little unreliable. So I don't use them for throwing at all, but yeah, amazing putting putter. 

This putter is for every skill level. I have owned this putter in the firm and OG. This is the best putting putter I have used. It is Penrose without a bead. This putter can be used as a throwing putter. However, it beats in and warps quickly. Highly recommend for putting!

I came from the Discmania p2 d-line flex 2. The Telos is similar but has some big differences. 

First off, it is a bit smaller diameter than the p2 and less round on the edge. The OG firm feels great, better than Discmania's in my opinion. Not nearly as many torn edges from beating it in. Telos flies straight and has dependable fade at the end of c1 putts. 

I do like these better for spin putting to get the most glide and straightest flight into the chains