98' Honda Foreman S 4x4. 4100 miles and still going strong. Get the solid rear axle bike if you want a robust non problematic atv. The Foreman has many reliability strongpoints:
Air cooled (no radiator to get punctured and leave you walking)
solid rear axle ( less cv boots to get peirced or cut which will lead to failure
solid engine with enough power
manual transmission ( simple run of the mill design, no belts or other crap to slip)
IFS front suspension (tough front 4x4 diff that allows enough wheel travel to be comfortable yet still able to work with heavy loads)
DC outlet
I bought my bike from a doctor that kept it up. It had 3300 miles when I got it. It still has the origional rear brakes on it and they work fine.
The only thing that has been done to this bike are:
front wheel bearings and brakes
rear wheel bearing left side
normal maintenance and be sure to keep water out of the brakes and drivetrain
I added ITP 26" 589 tires and wheels, Warn winch, silencer pipe, gun boot, beer holder, front rack bag.
Does not burn oil between changes. I will add a deep water snorkel kit soon.
I have had alot of bikes over the years, and this has to be the best yet. Even though it is an older bike, I still think reliability overcomes all the new comfort features.
If mine poops out, I will buy the new Honda Foreman S 500. The new ones have front disc brakes and a 2x4 / 4x4 selector.