its like that cause i weigh 7 stone and run allot less psi than you do. Therefore, whenever somone gets on my bike, they say it feels like a trampoline on wheels. Ko bikes are amazing, i am not just saying that cause ive got one, im saying it because it has brought my riding on soooooooo much since i got it. ive ridden loads of echos, zoo's and gu's and most of them felt good. but compared to my kobike, they came up short. ino you think im biased about it due to fact its my bike talkin about, but.. meh.. at the end of the day its your choice but i think you should seriously consider a ko, they look amazing and ride even better (when theyre set up nicely) you should have a go on loads more bikes before you dicide what youd like, theyres loads out there to choose from. good luck, bill x PS: check this badboy battered to ferk! indistructable!