I too was looking for a work/play UTV however, I'm more of a "Dare-Devil" 2-stroke dirt bikes and an old school 2-stroke racing four wheeler (Suzuki Quadzilla LT500R) that will do just under 100 MPH.
Well I also want to take my wife riding in comfort so I went with the Can-Am Commander 1000 Limited. Yes, it's fast. In high range it will do about 75 MPH in Low about 35 - 40 but it is so comfortable. It's not cheap either. The limited has a lot of stuff most people don't need like GPS, stereo, Air Ride Suspension System... I paid just under $19K for it. but you can get the base model 800 without the bells and whistles for around $10K. Still a very capable machine and probably the most comfortable seats in any side by side. It will do both work and play very well.
I also just bought my father a Mid-Size Polaris Ranger 800 and he absolutely loves it. It will go about 55 MPH but he usually just cruises at 15 - 20 MPH. The only thing I don't like about the Polaris is the turn radius on it is not as good as I thought it should be.