Sunday May 1st I was able to take the dealer demo 155 pro out for a ride. I really wanted to put it through the paces since it is going to be the sled I buy next fall. It only has 300 miles on it and they are very easy miles. The dealership took the time to install a 42 tooth lower sprocket, 58-38 helix, HPS can 64g weights. My buddy has a standard 2011 RMK 155, bone stock. Throughout the day, we traded back n forth. The demo pro was sooo impressive off the line and in the trees. The standard runs good, but was nothing near like the clutched Pro. We were able to find some north lightly treed slopes that had perfect snow that you could climb to the top of anything, yet enough powder to make it fun to sidehill and weave through the trees on your accent. I am amazed at how slow you are able to go while picking your way through the trees. I am also very impressed at how quick this sled is to change direction at the last second to avoid the tree you think you are gonna hit. I am currently riding an 09 800 155 with Holz (old style) rear with floats and Zero Pro fronts. I was doubtful of the Walker set up, but I was very satisfied with the way the Walkers soaked up the bumps and did not pogo like the Floats. The clutching was spot-on on the bottom, but was 200 rpm's shy of peak all day. 62g would have been perfect for the firm snow. We have had consistant weekly new powder until this weekend. The 64's are said to be perfect in the pow. All in all, needless to say, I had a TERRIBLE time returning the sled to the dealer today. I would get it now, but then I would be wasting 9 months of a 2 year warranty. IT'S GOING TO BE A LONG SUMMER!!!! I AM IN LOVE