For the price and comfort and general layout, the Polaris is clearly the best deal ($5,600). I talked the Yammy dealer down to $7,000 for the non-power steering Kodiak 450. Financing is better there too, 3.49% for 36mths or 2.99% for 24 mths.
The Kodiak seems to be more rugged, has good clearance and has true 4x4. The Polaris isn't true 4x4 and that's a let down. I'd also bet the Yammy's generally have better reliability stats.
I'm not liking any Arctic Cat, Kawasawki or Can-Am's for work machines. I'll check out Suzuki next chance I get.
If Honda had 2013's in stock, for $6,800, I'd probably call it a deal, even though the Polaris and Yamaha seem better to handle really rough terrain.