I think the Stag I've got is one of the more understable ones. It started out way closer to an Eagle L, TL, etc kind of disc than an Eagle, Teebird, Instinct, etc type. I usually hit it hard on a good amount of hyzer and let it flip up and drift or give it a lot of hyzer if I want just straight. If I throw it flat at all it absolutely sails into a turnover immediately (which I love for a lot of FHs around corners). The Insanity does the same thing but since it's a little faster (and not a glide machine like the Stag is) it's not quite as touchy even though it's understable. My longest used Insanity (Neutron) is definitely flippy and really similar to the Stag. I had a Plaz Insanity that had a really flat top that was laser straight. But my other 2 N Insanities are right there in the same ballpark with the others and fly like my Stag used to. I just got a Cosmic Neutron and it seems consistent with the others (my first day with it was really windy so hard to get a gauge on it).