[dmdan]

Well,
I am going to put a vote in for the 750. 600's are mopeds, especially since you have track time. There are going to be times when you want to get out of someones way, and you may be stuck in a gear at 5k or 6k rpms. I am pretty sure the 750 will get you out of it, while the 600 may cause you trouble. I don't know tho, I am glad the other people are happy with thier 600's so I don't want to diss them. As for the 750 going into turns, PFFFFF. I live on a mountain. it is 3 miles up, all turns ... ALL TURNS. I have no problem, the bike is light, and small in my mind and bounces in and out of them without a problem. I would have no idea about how the throttle response is with the other bikes. Mine is touchy, but grab a helmet, its a sportbike, you learn how to control it like your g-friends g spot (its too bad some people never really have control over either).
The thing that really points out is your experience and track time. Remember you can always get some heli bars, and rear sets that make you feel a bit better. I agree the 750 isn't like my couch, but I think only the degree angle on the bars is a problem. I can sit up, or crouch down and feel comphy. (remember i ride 60 miles in one direction every day). I was devloping a little kink in my wrist, but i made a concerted effort to take my weight off the arm that was on the throttle (the only wrist that hurt) and it has cleared up.

In the end its your fun, your comfort, and your decision, and either way, I am still going to be insane. I choose mine because i can squeeze in between traffic, go faster than i really should, and look sassy doing it. I have been riding it for 2 months, my shoulders, neck, back and hips feel fine, just a bit kinky on that one wrist, and its getting better.

When I get a weekend cruizer, Its gonna be a fatboy, so I guess thats my idea of recreation.