You have listed 8 vehicles and I have experience with all of them. I listed them in order of my favorite to my least favorites. In my opinion the Montero is in a class of it own. If you need help finding a nice specimen send me a pm, I live in Utah so I am close by.
1) Montero - The Montero is by far the most offroad capable and durable vehicle in this group. It is also the only flagship/luxury SUV you have listed. It is in a different class. That rear locker is more valuable than any straight axle and you put on 35's with out any mods. The quality of the Montero is on par or better than that of Toyota and Honda. There should be no squeaks or rattles. While the Montero is the biggest vehicle on the list, mpg will be as good as any on this list including the Suzuki, expect at least 20mpg but I think you can get 24mpg since you live in Utah. If you need help I can help you find a nice Montero for 2K.
2) Trooper - I like Isuzus, the first two vehicles I ever owned were Isuzus. The Trooper is similar to Montero in many ways, but it does not have the rear locker, it lacks dealer support, it only seats 5 and the IFS is not as strong as the IFS on the Montero. The Isuzu does flex really well in the rear end which makes up for the IFS and the lack of a rear locker.
3) Toyota - Toyota makes great vehicles, but the 3.0 4runner in under powered esspecially when loaded with gear. I would look to something with more power. I like my dad's 1994 toyota, but it high strung and it is no where near as sure footed as the MOntero, trooper, cherokee or pathfinder. The 4runner is high on this list because of it reliability and aftermarket support.
4) Pathfinder - My personal experience is the first gen Pathfinder is a great vehicle. My sister also owned one of these and she readily admitted that her 1993 Pathfinder was a much better vehicle than her 2000 Jeep Cherokee.
5) Cherokee - The Cherokee suffers from the poorest build quality on this list. Is does not mean the vehicle is unreliable, it just means it squeaks and rattles. The paint will all be faded, the plastic trim is cheap, the dash will be cracked, the seats will be shot etc. While it does have a SFA, it is not as offroad savy as others on this list. I think rock crawling and flex are way over rated. An IFS will be plenty adequate for expedition use. To own a Cherokee you make a lot of concessions.
6T)Suzuki - This is a tough one, but the little suzukis have there place in the offroad community. The main concern is they are low to the ground, and a lift is required to fit 33's, but once you go with big rubber, the engine will be under powered.
6T)Ford - The Ford family uses the TTB front end that is good for offroading, but it is also hard on tires. The real issue is the Fords don't really excel in any area, they are just average. My brother had a bronco II that was a blast to drive but I would not want to go camping with 4 people and all my gear stuffed into a bronco II. Maybe an explorer would be better.
6T)S-10 Blazer - I also grew up being addicted to GM vehicles. I thought they were the best. While I still like the fullsize pickups, but the S-10 vehicles suffer from many issues. The best part of if the S-10 is the 4.3L but that is where the positives end.