Well, I took it for a test drive today. A little disappointed. I don't think I'll be trading. It pulled like a locomotive from 4000-7000, but quickly ran out of steam. And it seemed to thump and shake quite a bit under hard acceleration. I'm sure this is perfectly normal for a twin of that displacement, but I kind of expected a little more refinement. On the positive side, I will say the torque is brutal! As hard as that thing pulls, I can't believe it wasn't bringing the front wheel up. Even in first gear it didn't bring the wheel up under WOT, which surprised me because my 650 will and it doesn't pull nearly as hard. Also, the brakes and handling were very good. The extra weight was not noticable at all. It felt like riding a really powerful 650. I didn't have a chance to ride any really twisty roads, though. Mostly just straight highway and a few gentle sweepers. So, maybe you might notice the weight there, but most of the time I doubt you could tell a difference.