Everything you'd like for comfort and quiet. Plenty of power. Nav system is great and interfaces with all other devices for comfort and convenience. Take care with more than four passengers, the center rear is like sitting on a brick. Overall schweeeeet.
Just the whole vehicle in general was built very well. AWD, and all the quiet. I think Lexus has a thoroughbred.
Stereo system. Don't make a consumer pay for the last option that make's no sense. Buying the model with the only upgrade without the Levinson stereo is not good business for a vehicle at this price point.