Well when i first started riding i was on a "mission prodigy" and did not learn much, After that i decided to do comp (ebtc) and then i decided to buy a "megamo expert" Because of the change of geo and weight i started to be able to do the basics e.g backhop, powerwheelie and pivits. One birthday i got a t-pro and then i started to rapidly improve, but i no longer have the t-pro any more due to cracking the frame, I then brought a monty ti221 and i didnt really get on with it so i then got enuff money and brought a gu typhoon 20" And as mc donalds would say "im loving it". So what bike did you improve on the most! ??