if you do many trackdays or like to play super hooligan rider with your buddies in the twisties, you know, "keep up" and all that, get the R1. otherwise get a busa and learn to ride it in the twisties. it works fine but you just gotta be more of a man than on those sissy liter bikes. tricycles corner way tighter than 15-speeds, but we outgrow those over time. after mastering a busa in the twisties [tire selection, suspension, riding style play key elements] your nads will actually grow in size and your friends will see that and be in awe.