 After looking at Lexus G350, Toyota Avalon and Cadillac CTS, I chose a base model M35.  So far, it's a great choice.  Just got back from a 4000 mile road trip across 8 western states.  Great road car, very comfortable and solid performance.  Averaged 24.2 mpg which is better than expected, averaging 56 mph (lots of 80 mph cruising). I'm 6'3" and 250 lbs, and there is plenty of room.  This is the most comfortable car I've owned.  No problems yet, but it's only 2 months old with 5000 miles.  