this is what i didnt no the answer to when i started. basicly the shorter the bike the more flicky it is. so on a longer bike the harder it is to do spins etc. some people say that you can gap further on long bikes and sidehop higher. but i dont think it makes much difference. the long echo is quite short for a long.... if you get what i mean. its up to you and what sort of style you think you will be riding. there isnt much difference. hope iv helped. ps. on tarty you can choose a colour scheme and change some of those parts like rims etc to a different colour.