Can Am is way ahead in drive train and suspension.
Speaking in terms of the 800 Outlander:
-The engine braking is excellent and makes very steep descents quite easy.
-The suspension soaks up really bad terrain very nicely and the handling is very good once you get used to the initial lean-in associated with the independent suspension.
-It is king in useable power as well. The other 'big boys' can't keep up. Not even close.
-Low range gives lots of versatility.
-The selectable 4 wheel drive is nice. You can disengage it or engage it as the situation demands
-The visco-lock which locks up the front axle is great in mud as it engages seamlessly and you don't lose momentum or concentration fiddling with a switch. In crawling situations a selectable front lock would be nicer but the visco works fine once you learn not to back out of the throttle but keep 'er spinning and let it engage. Once it engages it is a truly locked front axel. It would be nice to have the visco lock with a manual selection option as well. Many people don't understand how it works and fail to take advantage of it. It's a case of the machine being smarter than the driver. The mention of 'CanAm AWD ugh!' above is uninformed, it's selectable and with locked rear axle and lockable front axle, simple as that.
I think Honda still doesn't offer a locking front axle. This is ridiculous if still the case.
-The fuel injection is a pleasure. Starts instantly, every time, every temperature.
I run mine very hard and have had very few problems with it. Mine is an 06 so it wasn't made in Mex. My buddy has a new 08 Renegade it has been great so far. My wife's '08 800 Outlander has been perfect so far. I don't think the Mexico issue is an issue at all.
It's a versatile machine that can work or play, if you like to go fast nobody on a utility quad can catch you.
For general farting around, all of the main brands are fairly good these days (excluding the China crap), but the ride quality and handling varies a lot from model to model. I can tell you that the Can Am 400 is a good machine but the 800 is a joy to run.
Can Am (note that all wheels are spinning):