I'm a 22 yo female and am starting to look for a good starter bike. My bf has a GSX-R 750 and I have sat on it and done minimal "rocking" exercises on it and it pretty much sold me. Scared me, but sold me. I would really like to get a 600, but the bf says it's too much for me for a starter bike. What do you girls think? And what did you all start with?