I have a Kawasaki 400 Prairie 4x4 lc. Very reliable and powerful for a midsize. Not fast, but will pull hard and make great traction (solid rear axle is reliable and strong), even without front diff lock. She's built to hunt and work, not race! Nice comfy ride for a solid rear X. Father in law has a 360 Prairie 4x4. No problems. Neighbour has had several Prairie's with no problems. I also had suzuki 250 2x4. Very reliable. 300 Kingquad 4x4's have also proven to be real tough workhorses. Around here in New Brunswick Polaris are known to have problems. Hondas have very loyal owners, but from what I have seen there are better choices out there. I tried both Polaris and Honda before getting a Kawi and don't regret my choice. Yamahas seem to be fairly reliable. Bombardier and Arctic Cat are pretty rare around here.