If you are serious about this question, defendersource.com is your best bet for answers. Just be aware the natives are restless and cannibalistic of newbies. Figure out what you really need/want in a vehicle. If it can only be satisfied by D110, go and get one. If you just like the feel and concept of one, consider an older Range Rover. They kind of feel like a D90 with leather seats (same suspension, similar weight, 10" longer wheelbase). Before you commit to buying/building/importing a 110, spend some time traveling in one. They are unparalleled in many respects, but they are not without their issues and they are criminally overpriced in the US. Of course, I would take one in a heartbeat if I could afford one, but my focus would be on making it comfortable, not on making it capable. They are plenty capable with minimal modifications, but the reality is that most travels are more pavement than dirt. It is quite possible that the gas trucks are more comfortable than the diesel trucks.
Colorado David's comment about fuel consumption on the gas engines is also worth noting. They burn a lot of fuel. This means you are paying out the nose to drive a Land Rover, but also (again, this is a gas comment, not diesel) if you are venturing into the backcountry, you are using a lot of payload and cargo space to carry extra fuel.
I don't know if you have given any consideration to a LR3 or LR4, but they are very nice vehicles and IMO worthy of the Land Rover name. On a recent trip shooting for an off road RV company, we opted to take the LR3 over the D1 or RRC because there would be a lot of miles on pavement or high speed (for a Land Rover) dirt roads. I had some reservations about this decision initially, but it very quickly proved to be the right choice (of course part of the decision was that we could shoot out the back of the LR3, but not the D1).
Make no mistake, if I had the ability to buy and send a D110 (NAS or ROW) to ECR, I would do it in a heartbeat, but since that is not in the cards, I will stay with the RRC. If you are just looking for a beat up old truck, take a look at the Tithonus 110. They can be had for $25,000 or less (shipped), but IMO they are more of a starting point than an end point.