Pick one!
All three of those machines have their good and bad points. Like was said above, find the dealer with the best service. If you are having ANY issues with the sled, the cheap price(as if a $10,000 machine is "cheap") will soon be forgotten if the "cheap" service is even more lacking. When purchasing a sled, ask the dealer if they are blowing out the clutches, aligning the engine, adjusting the track tension, and so on. I do not know if you can do all of those things yourself. If you can, then service should not be an issue. If you can't, the dealer's good service dept. will have you back out on the snow ASAP! Good luck with which ever of those machines you choose!