My 636 is my first bike and i absolutly love it,have 2 years experience now including 3 track days and have riden a few friends thou's and to be honest im sticking with my 636,its so much fun round the twisty stuff,i go round the outside of some of the guys at times,600's are so easy to ride and loads of fun,had mine set up recently to and 118bhp is more than enough for me