I just picked up a nice 06 LR3 SE 4.0L with 34K miles and went through the same process you're probably going through now. I don't really have a check list but for me the biggest issues were prior ownership, maintenance and warranty. I found a well maintained, one owner LR3 (verified through both Autocheck and Carfax) at a LR Dealership in North Carolina. I wouldn't normally pursue a dealership deal but with this particular vehicle I think it makes sense as I don't want any issues concerning the warranty. The dealer processed the "change of ownership" directly with LR so I have no worries there. I still have 11 months / 16K of factory, bumper to bumper warranty which to me is essential for this vehicle. Plus the dealer gave me a 100,000 mile / 48 month powertrain warranty ($300 ded) good at any LR dealer. It took a while to find and I had to drive 650 miles to pick it up but, for $21,900 I'm quite satisfied. Good luck on your hunt!