After lurking as a guest for a few years and going through this thread (and other full size threads) a couple of times I narrowed what I was looking for to a few options (GMT830/GMT930 HD Suburban or Yukon XL).
Last weekend I came across this 2004 Suburban 2500 LT with 127KM/79M and managed to beat the army of interested buyers. It is incredibly clean for its age and mechanically perfect aside from some minor routine wear items.
Plan to use it as a mini camper for camping and hunting trips and also to haul a travel trailer, atvs and boats. Looking forward to using the knowledge shared here to create a fun adventure rig.