I don't even have 5 to put on the list. I'm only 17 though.
So I owned one from every one of the big four.
Current to oldest.
1. 08 XP Summit 800. 154"
2. 07 RMK 600. 155"
3. 96? Yamaha Phazer
4. 70's Cat 500. Lol
Melted a piston on the Cat. Lost the whole motor in the Poo at around 2800 miles on a -45 C day. . My dad has the same sled though and he has like nearly 4500 Miles
with nothing but a minor clutch problem. Haven't even road the Summit yet and I'm already replacing things.
Guess that's sledding for you though.
Most Reliable = The ol' Phazer. Only problem I ever had was the pull rope broke. Also had a few recoil problems with the pull rope. But other than that, over 10,000 bulletproof KM's.