I echo those last sentiments: find a good one and maintain it properly with regualr services, good quality fluids and high quality parts (ie. not Britpart stuff) and it should serve you well. Like the others said, you will get niggling faults on old vehicles, but LRs seldom leave you stranded. And while we consider LR's reputaion for poor reliability, consider Toyota with their total brake failures, igniting window sitches, steering and hand brake faults and so on, and consider that's on brand new vehicles...
Most on this form fervently disagree with me, but the UK experience of the LR3/RRS has been very poor with respect to reliability and maintenance. They are wonderful cars when they're working, but they suffer a lot of problems with EGR valves, turbo chargers, HEVAC servo motors, air suspension and various ECUs, while they also go through suspension bushes, tyres, discs and pads at a rate that will make your eyes water. Manual transmissions are reliable (as are the automatics), but a clutch change requires the entire body to be removed form the chassis (costing about £1500 in the UK for what should have been be a medium to easy job), and they appear to have weak suspension wishbones (cheap, welded steel pressings instead of heavy forged intems). They're not really viable as a DIY repair vehicle, either - there are just too many ECUs to deal with unless you can afford your own diagnostic and fault clearing tools. In essence, they're great to own under warranty, but will be a real headache when they get older as they have been very poorly designed with respect to maintenance, contrasting heavily with the older vehicles which were astonshingly easy to maintain with their easy access to most parts, simple construction and philosphy of repairable and refurbishable assemblies rather than sealed units.