I would have to agree with most of what Laurence--Trials has said, saying that i have a bionic b5r, check the bike shed u should see sum piccies, i went from a ICE which had a +70BB rise then moved to the b5r, i didnt no what to expect but jus went 4 it, and i dont regret it, yeah it felt a lil weird at first on 2 wheels, but as a trials rider i seem to spend quite a lot of time on the back wheel and ive gotta say the bike does feel amazing on the back wheel. I would go for it, great value frame and it rides really nice.