Finding a dealer that you trust (and that services their products) is probably more important than the brand.
Guys in my hunting club have used Honda, Yamaha, CanAm, Artic Cat, and Polaris. Don't remember any Kawasakis or Suzukis.
In general:
The Hondas and Yamahas were very reliable. The first machines that were used on our club were old 2WD Hondas and Yamahas. Still have a die-hard Yamaha user on a newer 4WD who's machine is pretty much bulletproof. No Hondas left - people wanted to update to automatic trans and Honda was too slow to the game.
The Can Am user switched from an old Honda and seems happy.
Artic Cats have had the most problems - frames, drive shafts, poor starting. One guy still uses one, but is about ready to get rid of it. The other Artic Cat user already switched to Polaris.
Most of us use Polaris now - 400, 500, 700 Sportsmans from late 90s vintage to just a few yrs old. A 550 and a 850 SP EPS, a 570 Ranger and a General. They work just fine, no particular problems, except with OEM Polaris batteries - get rid of those at first opportunity and replace with a good AGM powersport battery.
I have a 2003 Sportsman 400 and a 2009 Sportsman 550 SP EPS. The 400 is showing its age a little, having some trouble with the shift linkage getting out of adjustment and jamming - so no more skidding or winching hardwood logs out of the woods for firewood anymore with that one. The 550 EPS is spooky easy steering and great ride - no problems with it so far.
