I owned a can am commander 800XT for a year. Put close to 2k miles on it.
Pros: Great power, good fuel economy. They are great when it comes to cargo space. I shot a 5x6 bull last archery season and i had it quartered out, with two bow boxes and backpacks with more room to spare in the bed.
The drawbacks to the can am are EXTREME heat between you and the passenger, it would literally make my water bottles as hot as my morning coffee! The other drawback is the very annoying gear whine, all of the can-am's do it but they are much more noticeable and intolerant (to me anyways) at 30 to 50 MPH with F&R windshields.One other HUGE downer is how big of a pain in the ***** it is to change the oil, you have to remove the center console, use a long hose to get your trans fluid in there, oil goes all over the skid plate when you pull the filter, and the rear differential is hard to get to to fill/check. I change my oil every 20 hours, so this got really old.
I now have a rzr 570 simply beings its less cost and much quicker to do oil changes, much more aftermarket accessories available. Nice & quiet, good fuel economy to boot. The bed is sufficient, (had a spike bull in it last year) and i like how much lower it is to the ground. Much easier to maneuver.
The cons are less arm room, and you are closer to the steering wheel w/not much leg room. (6'1 230 lbs)
The bed tends to get hot so i remedied that with a 3/4 sheet of plywood.
If i were you i would consider the 570 - afterall, the chances of you going 70MPH is very slim, especially if you use it for hunting.