My wife and I had the pleasure of riding the new sleds for 2 full days prior to the release. I do agree with all of RunningRX1's observations and we were both quite impressed with the 2011--we own an Attak, Vector 121, Vector LTX and an 08 Nytro so we have a good baseline to compare our thoughts against. We were able to do several acceleration runs side by side w/2010 Apex 121" vs 2011 128". I (190lbs) was on the 2011 and my wife (140lbs) on the 2010. The 2011 clearly walked away from the 2010 in both runs done from a rolling start. My opinion is that too much focus is being put on the peak horsepower output of this new engine thus leaving many dissapointed. I believe the major gain here has been in the torque department with a smoother, more effective transfer of same to the snow. As a wise man (Johnny Skeptical) once said "the proofs in the puddin"--nuff said.