We've got a couple of RZRs at home and love them. It is an absolute blast on trails. IRS is a super-plus and AWD on demand is amazing. It is almost impossible to get stuck (within common sense of course). It is very responsive and an 800cc makes for an awesome workhorse.
This is an amazing all around performer. It tops out around 55 mph, which is plenty when you're on a small trail between trees. The handling is fantastic, responsive and the ATV really goes just about anywhere.
The RZR is the perfect mix. You get awesome performance and work capability out of one machine. I cannot recommend the RZR enough.