I went and bought me a 2010 Arctic Cat 550 H1 4wd with 3000lb winch in Lime Green last week. I have had the itch for a 4 wheeler for a while now and looked at the Yamaha, Can-Am, and the Arctic Cat and I am very happy with my choice! I took it out to the lake this weekend and put about 25 miles on it. I am breaking it in a little harder than the manual suggests, but that's how I have always broken in new engines.
I have already used the winch to pull out a dead tree. It was about a foot wide and came out pretty easy.
I am keeping it mostly stock for now, probably just going to put HIDs in it and call it good for a while.
Here are a few pics.