Recent thread about a Tee Rex and a Tee Bird having the same flight characteristics but requiring different speeds to attain the same result. Made me wonder a few things. First are the Tee Bird, the TL and the Tee Rex all part of the same family? Are there other families out there, I heard the Viking and valkyrie are brothers is that so. I also would love to know if there is a chart or a reference to show what a disc does at varying arm speeds. I think this would be more helpful than the current rating systems. I hear some people say a disc is overstable for them turning left early, some say its just perfect flies straight, and still others say the same disc is a flippy paper plate understable and chases gophers after turning right out of the hand. I think it would be cool if Innova could have a sort mechanism where you change the arm speed and it shows what a disc will do at different speeds. It would clarify things a lot more. Do I make sense and is there any tool out there like this?