the banshee is a better handling machine because with the 2 stroke power you can get the tires spinning and "slide" a turn. It is also a better balanced bike. Where with the raptor it's very hard to take a turn because the tires grip when giving it throttle, causing it to want to flip. If you extend the rear axle and put extended a-arms on the raptor ($2000) it will slide a turn. The stock form of the raptor is too narrow and top heavy. i had a tough time getting it to donut....it kept wanting to flip on me.
they are both close in top end. the stock raptor will have about 2mph on the stock banshee. both run low 70's. put pipes on the banshee and you will run upper 70's.
the new yzf450 is in the same low 70's speed catagory, and will handle better than both the banshee and raptor.
my banshee will run low 90's (when it's not blown up ) my next machine will be the 450.