Nick, I actually just went through what you are doing. I bought my first Land Rover a couple months ago and it was an LR3. My experience has gone pretty well, with a few eye openers.
First I for some naive reason expected a luxury dealer to not have Jiffy Lube-itis. Which is everything is wrong with your car even when it's not. I have taken the LR3 in twice for some routine stuff (such as the control arms) and every time they have told me my brakes are bad and my battery needs replacing. I have checked them both, and even had a mechanic friend verify and my brake pads and battery are fine. So first lesson: don't just do whatever the dealer wants. They will try and stick you for a lot of expensive repairs/maintenance.
Second: If you get an LR3 in the 70-90k range (which is probably around the mileage for that price), expect some early cash outlays. The bushing will probably need replacing. If it has not had the transmission fluid changed, it will need it. I think there is one more item as well that is kind of pricy but it's escaping me at the moment.
Third: You will probably instantly love the vehicle. I had never even been in one before I started my search and I am hooked. The seating position and view out of all the windows is great. The museum like quietness of the cabin is awesome. The engine shifts well, and actually accelerates well (for a 5500 pound vehicle). I have gone on 3 long trips (mileage wise) already and I just love driving it.
So I say by all means get one, just be ultra choosy on which one you get. Get as many service records as you can, no accidents, etc.
