That's a good point. I was really close to getting a 600 because I thought I had enough self-control to not get myself into trouble. After getting my 250, I found that that was the case about 99% of the time for me....but I'm sure I would have wrecked that other 1% of the time if I'd started out on something with 5x as much horsepower.Don't kid yourself about self-control, either. It's like 13-year-old girls saying they'd never until they're married but when they're 17 it's like there's no tomorrow. Once you have a bike like that self-control is not even in the question. Self-control is buying a smaller bike.