Thanks for the tips and advice. I suppose the reason for my original post was to determine if I would notice a dramatic increase in performance, but it sounds like it wouldn't be substantial enough to warrant the money it would cost. Like I said before, I really like the bike I have now, and I admittedly have not road tested any of the new bikes. I will do that just for fun and I'd be willing to bet that it will make me appreciate my "paid for" bike even more.