i owned a Pioneer 700 2 seater, i t was a great work vehicle for around my property, but just didn't stack up to my expectations for trail riding. not enough power, and even though i liked the auto trans, it not well suited for moderate to heavy trail riding. The suspension is terrible as well. Build quality is awesome on the pioneer, and I'm sure it will be dead reliable.
i traded it in on a 14 Arctic Cat Trail 700, 63hp and fox shocks made this thing a treat to ride on the trails, tons of power, great locking diff, and at 50" wide could fit on all the trails. the downside to it in my opinion is the build quality isn't that nice. not that its crap, just some of the materials felt cheap, and i think some things could have been thought out better. though the price point is awesome on the wildcat trail, and at the time, it was the set spec'd 50" wide sxs on the market on paper. unfortunately, it got totaled within a week of ownership, my wife hit a tree on a trail ride and it bent the frame.
the newest purchase is a 14 Can Am Maverick 1000 X XC.. its the 60" wide version. all i can say is holy ****. 101hp its amazing. fox podium x 2.0 reservoir shocks with comp/reb adjustment, the best cockpit on the market, factory beadlocks and 27" bighorn 2.0s, and i got a **** of a deal on it so i felt it was priced right at what i bought it for. the build quality, attention to detail, high end materials is just amazing on this thing. honestly it is probably the nicest sxs on the market. it may not be the fastest or have the best suspension, now that the new RZRs are really upping the anty, but id still choose the can am.
i know this isn't a fair comparison to the pioneer, but i was just giving my take on the ones i have owned. haven't owned a RZR, but i have ridden in my buddies 570 and another friends 800s. both of them love their RZRs, but do talk about the machines flaws as well. the one thing i can say is when i rode in both, they both made a lot of squeaks and noises from the suspension. guess bushings are a big issue on them.
I've heard the wildcat trail, people are already having issues with motor mounts and bushings. Can Am guys talk about weak tie rods. i think every machine will have its issues, pick your poison.
as long as your enjoying your machine, doesn't matter what ya buy.