Any brand in a 350/400 class or better.
I have a 400 4x4 and it will do all I need. We haul our tower blinds to their location on a low bow utitlty trailer being pulled by our atv's. 300 and 400 cc models. I can't think of any harder hunting work than that.

Suzuki's got a new 400 out called an eiger, it goes for $5199. give it a look. the best cc for the dollar.
Other than that:
Honda= rancher 350 or 450 es
Yamaha = kodiak or big bear
Kawasaki= prarie 400 or new 360
artic cat = 400i
Polaris= sportsman 400
The reason I listed these models and not the new big bores is because of it being your first quad. Most people don't want to spend over $7000.00 on thier first quad.