the 10 has about 15 more hp than the 09 and i think its about 10 lbs heavier also, mostly due to the huge can.
the 10 has frogskins on the front of the hood 1 screen in the center hole of the hood over the clutch and no screen in the center hole over the exhaust, multiple small sections of glued on foam on the inside of the hood for sound dampening instead of two huge pieces of dampening material held on by a whole lot of clutch eating metal clips, a silicone seal/gasket around the exhaust outlet, and a funny looking high rise seat.
thats all i can think of right now.
I forgot the best of all..... new stickers!!!!