As texases said, it depends strongly on what your needs are. If you need major-league off-road ability, the Liberty or a Nissan Xterra would be a good choice, with the Nissan being a good bit more reliable. But both of these are rather uncomfortable, poor-handling beasts on pavement. Think carefully about the conditions under which you do most of your driving.
If you really just want a tough-looking station wagon with the option of all-wheel drive (as most SUV buyers do), then either the Forester or the Toyota RAV4 would be terrific. The 2011 versions of the Kia Sportage and Hyundai Tucson are worth a look, and you might consider Hyundai's slightly larger Santa Fe too.