Cephas - we all have opinions on these. Here's mine.
I would encourage you to sit down and actually make up a Needs versus Wants list for the UTV, then see how the pros/cons of each brand fit in. Think about how it needs to work for you: how much to haul, tow, carry, how many people to get in it, how much ground clearance, 2wd or 4wd, lights? Roll cage? serviceability? If you have water to cross, how sealed is the trans and engine? Keep thinking and thinking and add to your list.
I have a Bristors Trail Wagon UTV. You can get these at farm supply stores like me. It was inexpensive, it's 2WD, and all I do is ride it next door for fireside beer rants and taking the trash out down my 1/2 mile long driveway. I don't "work" mine hard at all, it fit my needs, and it was inexpensive, and with a Honda engine, it will last longer than I.
But ... If I were going to ride like it was a sport machine, then the new Polaris Razor or Yamaha Rhino are tops. They can do work, but they excel at play.
The "work" machines are the Ranger, Mule, Bobcat, some John Deere's and others. I have two friends with Rangers; perfect for their use. Big farms where they need the speed, suspension, ground clearance, water-fording ability, carry capacity, the plastic bed will never rust, their fuel injuected so they start and run with no problems, etc. But these are twice the cost of mine. I have heard from other people that the Kubuoa is built like a tank and is nearly indestructable. There is a guy that works for a railroad where they use them non-stop and abuse the [censored] out of them, and he recommended them.
The better you define what you Need and what you Want, the more you'll be pleased with your choice.
BTW - check out
http://www.utvtoday.com for some other brands.