I have read many a thread on various motorcycling websites that say why a beginner should not start off on a 600cc sportbike. For the record, I do agree, and these various articles have all made perfect sense to me. What I don't get however, is that some of the same people say that a 500cc sportbike is fine for beginners. Being in the market for my first bike, what I'd like to know is what is the major difference for the extra 100cc that makes a 500 so much safer. I had originally ruled out a sportbike but I do like them, and feel it better to just keep my options as open as possible.