You need to know how many people, how much gear, and where you will be going. My dad used to go out west in a 15 passenger van, towing a jeep. It got everyone there, and their gear and then they had the jeep for hunting. As far as a trail rig goes, you can't beat a jeep wrangler, especially if it's built. But a wrangler is worthless if you've got six hunters and a 300 miles drive.
If I had the funds I believe I would have a Chevy Colorado ZR2 with the Ecodiesel. Just because I like the idea of small diesel. And the Zr2 is a capable off road truck as well.
Recent hunting vehicles for me include a Chevy Impala, Ford Escape, Chevy Silverado, Jeep Grand CHerokee, Jeep Liberty and a Ford Ranger.... Basically, make use of whatever you have available to you!
-Jake