marathon mike, welcome. I too am a newbie to 4 strokes as well as to this site. But I can tell you this, ever since I saw the new '06 Yamaha's I was in complete shock. I am a hard, fast, aggressive rider on snowmobiles and for the last 5 riding seasons have been attached to 2 stroke sleds for solely the lightweight and ruled out any possibility of owning a 4 stroke. Now, since I had the chance to view in person and test drive a '06 Yamaha Apex in Eagle River, WI a couple of weeks ago, I am now a believer in 4 stroke technology. So, this past Saturday I snow checked a '06 Apex GT. The amount of money Yamaha has spent on R&D for such a small market is incredible! Once you ride one you will never go back to anything. By the way, I'm studding my GT with 168 Woody's Stainless studs and putting on USI SPX skiis. Clutching the Apex, go with the best - Simons/CPR, Ullmer racing, or even Goodwin Performance all make exceptional true clutch kits for Yamaha's. Good luck with your choice.