If you really want to off road a Subaru a olderone might be better to keep around, as they are cheaper, and you can do ALOT to them. Also the rear semi-trailing arm suspention is much better and durable. You can also get the part time 4wd in a dual range which makes for much better going than the single range with a center LSD.
That said, you might also want to keep away from the wagons as thier overhangs are too long to be very good at it. The trails around here have lot of V cuts where the tow hooks on my wagon dragged in the sand.