I see pretty much anything with the "Jeep" name on it going for way more than it should around here (although not quite as much as those old 1st-gen Broncos however).
A Bronco
II on the other hand (or a Ranger)... I think I got maybe a grand total of $7000 into mine, including the truck itself. No "compromises"... This includes ARB lockers, 5.13 gears, dual t-case, OBA, Warn winch, rollcage, 35" BFGs, disc brakes all around, Bilstein shocks, A/C works f'in' killer, over 3 feet of total suspension flex, and on and on... it's got plenty of good stuff. You'll easily pay more than that just for a Jeep Wrangler by itself in decent condition, then you still got to pay for all the stuff to make it worthy of a decent trail.

Then there's the fact it's a jeep. You'll pretty much disappear unnoticed into the sea of jeeps that already exists on just about any trail.
'95-'97 is probably the best year range for RBVs if you absolutely must have an auto trans, but geared deep enough, a manual is actually very pleasant to drive on rocks (more so when you're on the downside of the rock).
My BII is geared 117:1 and just by working the clutch with one foot, and brake with the other, it'll crawl up & over pretty much anything right at an idle (no need to touch the throttle). And that's with the 2.9L. The 4.0L will of course have even more ability to do this.
Mudding is actually where an auto would do better, as you don't lose all your momentum when it shifts gears like you do when shifting a manual.