Well personally, it would either be the 636 or s1000rr. I've only every owned my 08 Zx6R and love it and i've riden my dads s1000rr and it was a beast, you can definetly get into some trouble with that and i've wanted a 636 for a long time. But thats just me. :thumbup
Good luck on your up coming purchase.
Good luck on your up coming purchase.