If you’ve been paying attention, then you’ve already seen and read our initial review on the new, second-generation 600 motor from Ski-Doo. We had a chance to rally the new motor in MXZ trim this past winter and instantly fell in love. While the 600 engine of old was good, the new motor is one that is damn near perfect. Want an engine that is just happy? This is your mill. Outfitted with all the latest in ETEC goodies, the motor produces a legit 125-ponies and has a much better run quality than its big brother 850. This one gets our vote as the best six-hundo on snow next winter.