For an 85 DD commute, I wouldnt recommend a XJ, they arent the best on dependability. For wheeling and cheap wheeling you can do an XJ, swap out the rear axle with an 8.8 from a explore. Dana 30 in the front will be more than strong enough.
Yotas are a great choice as well. I had a 1989 Yota pickup, it had 456,000 miles on it, it was on its third engine but original tranny. So they are great running vehicles. Wish I would have done the SAS on it though. IFS on those with the torsion bars up and a shackle lift, they dont ride so well or wheel so well.
Blazers are fun to, cheap, real cheap. Usually come with the V8 in them, have a dana 44 in the front and a 12 bolt in the rear. Also if you go 74 and older it has the full top to take off in the summer.
I work at an auto parts place and I have had so many calls on parts for Isuzus, I would stay far away from them. Parts are expensive and they go out.
Samis are great vehicles, they have the little 4 banger in them and you can build them up to be a pretty mean machine for a reasonable price.
There is alot of choices out there, I would recommend having a crawling vehicle and a DD vehicle being two different vehicles.