I am current;y in the market for a utility quad. After hours of research this is what I came up with.
Honda: Lacking power, low range, and front locking diff. Expensive.Reliable!!!
Polaris: Nice ride, not the most reliable.
Yamaha: good quads, many options, I would buy one.
Suzuki: Best inexpensive hunting quad out there Eiger 400 (2nd choice). Small, good power, low range, manual trans. Vinson is a good pick also.
Kawasaki: Brute Force 650. Bog bore quad priced at mid level. Front locking diff, low range, big V-twin power. I'm buying this one.
Suzuki, yamaha, and Kawi are now almost as reliable as the honda. Remember this is just my opinion and others may not agree. Happy shopping. Did I mention the power of the Brute Froce 650, wheelies are fun.