I went to the Honda/ Suzuki/ Can Am dealership today and got some info and quotes. I looked at Honda 400 Rancher and Foreman 500 and a Rubicon and they are all well built but all have the straight rear axle with 7.5" of clearance and only the Rubicon had high low range and was liquid cooled. It was more money but was well built and looked great. They offered some great deals on left over 2006 machines. The Can Am (Bombardier) didn't really knock my socks off because they were expensive and the reviews I have read aren't all that good. Lots of bells and whistles but that might give them more shop time according to the salesman. I really liked the Suzuki King Quad but they didn't have a 450 yet out on the floor. I guess the 2007 machines are just starting to come in and I should be able to see one in a week or less. I looked at the Powersports on line tool and compared them to the 700 King Quad and they look feature wise like the same machine except for a smaller engine and about a grand less in price.
Electronic Fuel injection
Front and rear independent suspension 10'5" clearance
dual disc hydraulic brakes
Liquid cooled
Same body size as the 700 King Quad
Digital instrument package
Automatic with high/ low sub tranny

According to the Powersports site the Suzuki ATV's were rated highest followed closely by Yamaha andHonda for what that is worth.
http://www.powersportsnetwork.com/enthusiasts/review_list.asp

I am leaning that way….today.