 We shopped extensively before choosing QX60 (BMW, Audi, Mercedes, Acura). Important buying criteria: 3 row, 7 seat luxury SUV that is comfortable, heated steering wheel (live in Boston area), blind spot detection, easy access to third row and can seat  adults in the third row comfortably.  Audi and BMW third row is a check box (not really usable), Mercedes (probably best in class but reliability concerns, twice as expensive as QX60). We owned several Acuras (TL and RL), but we preferred QX60 over the MDX (third row not as comfortable as QX60).  We bought the extended warranty (10 yr, 150K bumper to bumper) for ~$2K. We really like the QX60, very comfortable to drive, luxurious with fantastic technology (Premium, Premium+ and Assist package).