I think the Sportsman 500 would be the best bang for your buck, one like this Polaris 2006 Sportsman
. The scrambler 500 is a bit sportier but you dont get independent rear suspension or any racks, this one does have a rear rack though 2004 polaris scrambler 500 4x4
. You can get racks for it though. The chain drive with the scrambler really cuts into your ground clearance as well. Yamaha had the Kodiak 400 4x4 auto which dates back to 2000 I believe. Here's an example 2005 Yamaha Kodiak 400 4x4
. You didn't say how much you wanted to spend but all of these are in the $2500 range or less. I just put local examples from my local craigslist on here, im sure there are similar ones close to you.