my familly owns a zx-10r my dad and i both ride it but it's suppose to be faster then the busa in a straight line and is much light. the hting i notice mroe about the zx-10r is it throws around like a 600 but when buying a bike don't look at all out straight line speed casue all of them are faster then any stock car your gonna run into on the street so go for the feel of the bike