RE: First ATV
Don't look at Polaris.[8D]
A Honda Rubicon would probably be a good machine for you. It has plenty of power, it's a very smooth-running machine, it has an automatic transmission for when you're cruising and a manual transmission for when you're working, and it will last forever. If I were you, I'd look for a good used one with low hours and miles. You should be able to find a new 2006 model right now for about $6000 if you really want to spend that much. Dealers are starting to get rebates on 06 models.
Whatever machine you do buy, get a winch put on it. They're well worth the money.