LR3 is good, but I'd expect some issue to pop up with the EAS at some point on the trail. An NCLR Club member had the marketing vehicle when the LR3 was introduced in 2005. It had coil suspension and it didn't perform as well as the airbags. I think in Europe there was an option to get coil springs from the factory but the NAS (North American Spec) trucks sold over here all had the air suspension. It's at the heart of the rig and will make the Terrain Response knob useless if you switch to coils. It definitely won't ride as smooth without the airbags, but you will have piece of mind that you won't get stuck on your bumpstops out in the middle of nowhere. That's not too much of an issue if you have stock tires, but any larger and you will probably rub against the fender well or the hard lines.
Before storing a wrench in the truck, every modern Rover owner should have this.
http://www.gap-diagnostic.com/products/iidtool/
There are some other tricks that involve pulling the compressor fuse after filling the bags. Oh yeah, the compressor can be a weak point too. There are a couple manufacturers of them. It seems like they can slowly die because of a bad drier.
These trucks are really good off road, you just need to know/plan for the bad things that can happen like any other vehicle.