I would pass on the 92. The 3fe is a great motor, but underpowered and manages worst gas mileage than the 93's and up. Also, I know it's a toyota, but the other high mileage one would scare me. Most of the talk on Mud is that the 4.5l motor is a 300k motor, so you may or may not get that much more out of it.
Also something I was going to mention in the other thread, you should sit in and drive both. The 80 can get short on leg room unless you move the seat mounts, not sure but I think the 100's have more leg room.
Saw a 100 at the Carson City Toyota lot the other day, it was brown, more like mine than Dan's.
Jack