Have a switchback 600 and it is a nice sled. I have owned many sleds, most recently a 2003 polaris 600 edge with m-10 (my all time favorite), and a 2011 ski doo 600 GSX e tec. Switchback ride (straight line) is excellent, motor is strong. The e tec, in my opinion, is a more refined motor. Regardless, I prefer the sound and feel of the polaris powerplant. On tight trails, the switchback rides more sluggish, and requires quite a bit more effort, compared to the "old" edge chassis...I could go significantly faster through the tight twisties on the edge. That being said, I really prefer the "new" rider forward position in all other areas of riding. Going from sitting to standing is very easy, making the sled handle very well through many situations. The sled is also suprisingly good in deep snow. Regarding fuel consumption, I recently rode with ski doo and yamaha (attack) sleds. The polaris got similar mileage to the Yamaha, not as good as the doo...but not much worse. A solid sled and I wouldn't hesitate to buy one again.