The sportsmobile would be the bomb. I too have gone many routes. 85 Nissan 4X4 with a shell & bed. Then a 1980 VW Westfallia, then a 1990 VW Westfallia. Needed more power & reliability. Now I have a Ford F250 Diesel with a fourwheel brand pop-up camper. Now I can go anywhere, have a forced air furnace, three way fridge, sink, two queen beds. The best thing is, I can take the camper off in about 20 minutes and I have a full size truck to use for Mt. biking, rafting, and many other uses for a truck.
Here is my camper. Well, not THE camper in the photo.
You can find some great deals on used diesel trucks right now.