hello i have a k7 gsxr 750 with loads of mods and there shit hot mate,the vfr 400 nc30 handle supurb but you will get bored and a vee twin may spit you off if your not smooth , but the thing i will say is once you get a bike do some track days and learn to ride it fast but safe, a track may not be the safest place to ride but it is the safest place to crash