well the t-rex is a long frame which means that it will be good for sidehops, taps, gaps etc but will be hard to manual and such. ive got a t-raptor at the moment and i mostly do stuff i should do on a long bike but its doing me proud. I think youd be fine either way but what do you enjoy doing? if its manuals and spins get a t-raptor if its gaps and ups go for a t-rex or if its a bit of both i'd get the t-raptor. Hope this helps