There is a great deal of diff. between the new 600's and the new liters. You cannot tell me that when you're on a gixxer 600 you feel almost the same as zipping around on a zx10. For someones first sportbike it'd be practiclly suicide to go out and purchase a liter. I don't care if you've been riding harleys for 30 years it aint the same. That's like someone whose been a go cart pro deciding to purchase a formula one race car.....yeah run with that. The liter produce much more power and don't take to kindly to any mistakes thus anything dumbass thing you do will be significantly magnified on a liter bike. Shit you can die on a moped but if you're gonna get a liter for your first bike you should go pick out your tombstone before hand it shall read "His balls were too big for a 600 so here he lies"