Join Date: Feb 2005
Location: Queensland, Australia
There are those who say that 600 race rep's are fine, though the general concensus is the 250 - 500cc range is the best place to start.
Myself? I started on a 250 and I'm glad I did. Bikes take a whole lot of getting used to. Sure, every village idiot can ride a bike in a straight line at traffic pace, but that's about it. When it comes to making that thing avoid obstacles, you'll relish the practice you had on a small, more easily-controlled bike.
New or used? I say used. Reality shows that you're going to drop it, so why trash a nice new bike? You can get a "pretty" bike when you've got the skills to keep it off the pavement.
In God, we trust; all others must provide data.