When I purchased this car in 04 I was looking at Mercedes Benz E class. Buying the Lexus I stepped up in build quality, comfort, reliability and performance, plus I kept $25,000 in my pocket! You can't beat Lexus for those qualities, and after three MBenz's I was tired of mechanical problems after 40,000 miles.
Comfort and reliability.
Exterior design is not as attractive as it could be - but it is my wife's and she likes it.