Ya I will Negotiate, Honestly how much do you think I could get an 08 sm510r TTLed. That's definitely true how I will always wonder if I should have got the 510. shit now I don't know. I don't really want to spend over 8500 because I'm going to buy a pair of te wheels and put dirt tires for the occasional trail ride.
The 450 is fine and the smaller piston means less stress, vibration. But more revs and slightly more dependability. But they both are extremely reliable bikes. Hint: aluminum lever protecters will pay for themselves if only used once and make good tie-down points.