Might just be the new run, but out of the box these fly like a more stable Mystere or slightly less stable Wraith. Still use it for forehands though, able to get a small turn with hard fade.

This was the disc I grabbed for a throw that needed to hook but was out of range for my Firebird. I've since moved on from this disc, but I enjoyed throwing it while it was in my bag. 

Its not that there's anything wrong with the Teerex in general, I only rate it slightly low because its completely redundant. The Teerex was supposed to be a beefier Wraith. I never found that to be the case. To me the Teerex and Wraith had practically the same flight. I won't call the Teerex flippy necessarily, but it will turn a bit on hard throws. It also glides less than a Wraith, which is a bit of a detriment. 

The Teerex simply gets lost in the lineup. There are too many other discs in the speed 11-12 group that do more or less the same thing. If I'm going to throw something Innova that flies like a Teerex I'll just throw a Destroyer instead. The Destroyer is a hair faster, beefier, and has better glide.