I have experience with two work UTVs:
2011 John Deere Gator XUV 825i Long Term Review
2009 Polaris RZR HD Long Term Review
Both have good sized beds with the ability to actually carry the weight in the specs. The Gator has a longer bed.
The Ranger HD has self-leveling shocks that kick in and lift the rear as necessary while you drive (takes a little bit of driving). The power steering on the HD is awesome. Did some recreational riding with the Ranger as well.
The Gator is more towards the work side than the Ranger, but I did take it to Sand Mountain and romped around the dunes with it one weekend - John Deere Gator 825i XUV Dune Review
Either are great machines that are built for work, but also suitable for trail rides.
How much bigger is that bed on the Gator Crowdog? That would be a big plus.
Nevermind! I just used the links you provided. Looks like the Gator is exactly the sort of thing I'm looking for. Only bad thing is the price! Wow! Decked out the way I want it, it's over $15K. I need to gear back my wants I guess. But the base unit is very good. Thanks!