i got a 600cc as my first bike....its not as hard as people make it sound lol. just use some brains when you ride, thats all. do not ride outside of your experience, like leaning at 100kmh. take things slow, and you'll be surprised at how not difficult it is to ride a 600cc. and don't even consider 250cc IF you use that as a "learner". Just learn on the damn 600cc.