A lot is going to depend on the trails you plan on riding. Width etc. I will say 4x4 is a must. Wet leaves can suck. Mud can really suck.

I suggest looking and sitting in them. Rent one of you can. None are cheap. Some are insanely priced.

I'm looking for a Jack of all trades with the one I want. It will spend time in the mountains in Idaho, Montana and Wyoming with occasional trips to dunes and Slick rock in Utah.

But there are a bunch of different ones to choose from.