Sorry if this is already answered (I searched and couldn't find it). I have an '05 650GS, but find it a little sluggish on the highway. I'd like the new 800, but seat height is a huge obstacle (28" inseam). Has anyone traded from the old BMW 650 thumper to the new 650? Did you notice a big difference in power? Please comment on any positives / negatives of the newer model as compared to the old. Thanks!