Also longer stay are easier for sidehops, gaps, but make you more stretched out when both wheel are on floor(ie riding to a spot ect) Mods are the way forward, especially if your small like me. I did ride a t-rex , too heavy, too big and generally held me back from doing moves that all my mates were doing! Got a GU short mod and it took about a 2-3 weeks to get use to it, form that point forward Ive progressed ten foldin everything. I could'nt even sidehop properly on the Rex, now on Gu thats all im good at is sidehops! Rode a mates zoo and they are soo nice for doing sidehops. If your like 6ft + ( Leacock), I'd stay with stock, or get a really long mod to make things more in proportion!! Steve