I keep a striker and a vision in my bag at all times, for my teebird and roller duties, respectively. That opto line plastic is the real deal. I've never tested mine at extreme temperatures, but avoiding those conditions is easy.
I've been rolling my vision all summer, and it has only a few nicks here and there, nothing like a champ or Z roller disc would look like. The Vision's stability has remained consistent, i.e. takes the same amount of angle, spin, and nut to get a tasty roll. They start out severely understable out of the box, though.
The striker has proven to be the most useful fairway driver I have had in my bag yet, so it has seen a lot more playing time than the Vision has. Still, it has no flight-altering wounds. For a while it was the fastest (main) driver I used, but since succumbing to the lure of the destroyer again the Striker fits back into my forehand/backhand go-to disc that gets thrown less, but constantly. The point is, it still flies like a dream, just like my backup Striker (brand new still) does, and I compare these occasionally in the field.
I hope they never change that opto plastic. Perhaps I'd better stock up on a few clear opto Strikers before they vanish from the production lines...