I picked up my 2015 MS 570 Crew EPS on Saturday. I installed a Stealth 4500 winch with the KFI push tube and 66" KFI plow. It snowed last night and my new machine got a great workout with three driveways, approximately 1.4 miles total each of which is at about 8600' elevation. I couldn't be happier with my setup. The 570 has a lot of power and torque. I was careful not to fully accelerate as I am in break-in mode, but plowing up hill at 8600' elevation in low range was not any kind of a problem at all. In fact, it doesn't seem elevation had any effect on the power from the 570. I did notice a couple of times when the diff lock kicked in under load of pushing snow to one side, the machine would seem to start to slide to that side under load, but immediately straightened up and powered through it. Two of driveways had 22 degree hills with switchbacks and neither were a problem for the 570. Love this thing!