Never rode a YZ400, but I am in the market for a new bike. I am very interested in the YZ400/YZ426 and was wondering how it compares to, say, a YZ250 2 stroke? when it comes to power and handling? one of the main attractions to the bike is not having to ever mix up the gas/oil fuel mix anymore. So, is this bike (yz400/426) a great bike, or will I be disappointed? Also, is there a major power and handling difference between the 400 and 426?