I had an H2 for a bit definately NOT an off-road vehicle underpinning is the same as a 2500 suburban they are extremely underpowered for thier size and weight plus as is common with the CV IFS systems on american trucks the turning radius is terrible so if you are planning on any trail work it will drive you nuts....Personally the land rover discovery would be a good choice they are very abundent (given a production run starting in early 90's through the LR3 intro two years ago) relativly nimble and a great all terrain vehicle as well...just dont try to pull them by the brushguard (usually mounted to bumper not frame) and they do great! The LR3 is great as well (Had one for a loaner while my S600 was in the shop) but I have no expierence with them off road. Also if you want to do big wheels I know yokohama and toyo (possibly others) make mud terrain tires in up to a 22 now