I learned to ride last december, and I've been riding a 2002 kawasaki ninja 500R since January. I've put a few thousand miles on it. I'm able to handle this bike pretty well, but I'm not really bored with it yet and I don't really think I'm anywhere close to being able to ride at the limits of what the bike can do. But a friend of mine offered to buy it from me in a couple months after he saves up the money. I was thinking about moving up around the end of the year anyway but I'm not sure if I should. I don't doubt that I'm capable of riding a faster bike, but I'm just not sure if I should move up so soon or if I should wait and try to keep improving my riding skills on the 500R. What do you guys think, how long would you recommend keeping the starter bike? Also when I do move up from the 500R, how much should I move up, what would you recommend as a second bike? Obviously I'm not hoping to get a turbocharged 'busa or anything too crazy like that, but i'm wondering if it would be too much to move up to a 1000cc? or should i just go to a 750? Thanks for any advice you can give me.