I think a lot of the GM platforms are great for builds or even using as stock. I have a '04 Yukon with 230K miles or so. Its never given me any difficulties. Sure have the usual stuff I have to do to keep it operational, but its comfortable around town and on the highway to a spot. Then when I get there it works great/fine offroad - granted I am a logging road, FS road, not a rock crawler kind of guy so I don't need a SAS up front. But the factory rear locker works. Only been stuck a couple of times and that's more from f'n around cause I had a buddy who could pull me out. Plus whether its a Yukon or Suburban plenty of room in back for all the gear and I can sleep there in a pinch (like the trip my buddy forgot his tent poles). When I trade it (ha....give it away!) I will prob go 4 door pickup as the kids are older and I don't need the 3 row seats and I can get 3/4 ton which I cant in a Yukon xl any more. But I would go with whatever GM platform you like/need....pickup, Yukon/Tahoe, Suburban/Yukon XL, I think they are all great for basic camping, wheeling, etc. Obviously if you're building a rock crawler something else may be better but at the price for a used one that was owned by a wife hauling kids to school and groceries I think they are great. Obviously if you're buying used if you can buy from the original owner or through someone you know so you know the TRUE history. Some get beat to crap if its owned by some guy farming or running oil fields or whatever. Good luck!