Have Arctic Cats & love them... they will go anywhere & I have video to prove it...LOL
Most of the machines are good & reliable these days... just depends on what you are after & how it will be used or abused. I have found that most used one are in decent enough condition, because most people don't treat them too bad.
If you are riding rugged terrain the power steering is nice, if you are just going to trail ride, I think the Polaris has the softest ride...If you are going to play in the swamps of Minnesota, might want to consider a Cat. I have a 400 & a 650, love them both.
BTW... The Gander Mnt, in Brainerd MN has closed its Power Sports area & still has a few Acrtic Cats for discounted price... might be worth a phone call.
Troy
"Look deep into nature, and then you will understand everything better"
Albert Einstein