I've driven many different brands of vehicles. The cheaper brands, just feel cheap. That's just my opinion. I'd recommend buying a nice used vehicle, rather than a cheap new one.
You have to be honest about what its intended use is for. These can be very specialized machines. For example, a mud buggy, won't be very good at hauling wood. It'll work, but not well.
Bigger is better on these things. There's nothing wrong with the small ones, but the bigger ones hold more stuff. So unless you're wanting mud specific, or putting it in the back of a pickup...get a full size machine.
Probably most important of all, is parts availability. Buying a recognized brand will be the best for this.
If I were buying a used machine, I'd look at a Polaris, or Kubota, for the bigger ones. Especially the Kubota diesel. And I'm definitely not a fan of computer controlled units. So older just makes sense to me.