Actually, the choice for me is between a used MDX and a used X5. I don't buy new vehicles. I'd rather someone else pay the depreciation tax. I've had incredible luck with a 97 Accord w/over 150k miles. I'd like to get the same out of an X5 if possible. Looks like the 3.0 might be the one to check out for me. I've driven two 4.4s, so I'll have to go test drive a 3.0 now.