Quote Originally Posted by R1craze
Yea Im 6'1 185lbs so a 600 wont do it
Lol. I'm 5'7" and currently 175 lbs and ride a 40hp 500cc standard bike... i'm no WERA racer, but I get around plenty fast around town and the twisties (i don't take mine to the track).

In all honesty, the only non-racing (as in, you're not on a racetrack) reason to move up to a liter-bike is for the torque in the low-end. So, unless you're: 1. into habitually breaking traffic laws or 2. Constanttly riding on roads where all the traffic consists of 911's, ferrarris and other cars that do 0-60 in under 4 seconds (yeah, right... maybe if you lived in Malibu or something)... then i'm going to take a leap to a conclusion and say that a 600 is plenty fast for someone of your size and mass.