James is right, there is a brand loyalty thing going on.
I've had nothing but Landrovers for over 8 years. Defenders, Discoveries and a couple of late shape Range Rovers. All awesome vehicles. I have always had a Defender for offroading and trips.
However, I'd personally advise something a bit more comfy if you are going to spend a lot of time in it. When I went to Morocco I took a Discovery and it was SO much better. More comfortable, decent air-con and all the oily bits like a Defender so if I had an issue the locals could fix it.
However, my brand loyaly has been shaken recenty.
I'd happy take a 4x4 Yeti or a Toyota now...
But back to the original question, you're looking at a station wagon or a hard top van 110. If it's just for the trip it's going to be the van. Cheaper to buy and easier to secure. If you go the station wagon route you can remove the rear seats, but why?
A good 110 Station wagon will cost a lot more than a 110 van if you are looking at the older 300Tdi engine.
If you are looking at the later engine the price difference is not so severe. But it's still there.
Overall, I'd take a Td5 disco if it's got to be a Landrover. Did it myself and it was good.
Nice to pull up at camp and all the Defender drivers are sweaty and caked in dust. But you are fresh from your bigger more comfortable seat and have had the air-con set at 20c for the last 8 hours. It may not be such a "hard core" experience, but do you really want that day after day after day?