just in case if one has doubts which bike to buy. I have both. 1000 is more of a superbike while 650 is a... well, a bike. 1000 has more power, is more stable on highways, and surprisingly has lower rpm. the exhaust sound is much superior (I have an Akra slip on without the baffle, and CAT removed, who needs that crap anyway?). But I have to say that 650 is much more fun. Not just because it is lighter, but its ergos let you turn corners much easier and it is just such a nice bike. Ok, the exhaust is not supersonic, but with my Leo Vince exhaust, it actually sounds really nice. The only thing that makes me think of 1000 as really superior is the gearbox. the one on 650 is really crude.