First of all, this disc took probably 5 strokes off my game. It seems to just magnet to the chains when thrown, and it really does glide forever. The zero hard plastic feels good coming out of the hand, though it does skip on hard ground so keep that in mind. But it flies true and is even good for layups in the 150' range. I also like to use this for longer tunnel shots, though I think I would like to find this in a tougher plastic to drive with it more frequently.

This Keystone could be a good putter, but it is a little to fast because of the glide. the Keystone is a 5 glide disc and it is understable. My red, zero hard keystone is a disc I can use sometimes, the disc had a natural disaster as I griplock the disc sometimes, and also throw far away from the basket so I rate this disc a 5/10 and probably be careful when your putting with the keystone it is pretty fast

Almost anything within 200' I'm reaching for this disc. Soft throws with a little hyzer will flip up, turn softly, and then sit down with a gentle fade. Harder throws will turn over and hold anny until setting down softly. Find yourself a good overstable putter to compliment this and you'll be set on approach discs.

At first I didn't like the keystone; that came down to the retro plastic. I hated how marked and pocked the edge of the disc got after a few months of putting and throwing. All those dents and such messed with my feel and release for putting and eventually I stopped bagging it. I later picked up a zero hard keystone that feels so much better. I've really like the actual putting plastic for this disc. On a putts it's super easy to have a relaxed release or driving/up shots it's got incredible flip up for extra straight distance accuracy. 

This would make a decent first putter for a beginner and a good trainer for form. However, I think to really take advantage of the monster glide this mom's somehow has, you really need to be at an advanced to top level skill.

Anything inside circle one is finding chains this disc feels great in the zero hard plastic.  Very reliable putting putter!