if your just after some bolt on mods... isnt the banshee fastest out of them all (counting only pipes reeds and maybe even some porting)
By the time you count in pipe and programmer on a raptor... your pretty well at pipes and porting on a banshee...
as for your breaking your 4 stroke all the time??? dont make much sense unless you cant properly maintain it... then if that IS the case the banshee isn't going to do you no good