Those are all excellent points. Drove gas and diesel X5 and liked the torque and environmental friendliness of 35d. MPG of Range Rover is biggest thing keeping me from buying. Range Rover has very contemporary interior (more important to me than exterior).

Saw BSW stuff. Haven't seen many posts that improvement is significant. Think better amp may be more important than speakers. Surprised BMW hasn't outsourced for quality audio.

Have some other financial/tax/local dealership issues effecting my decision. Hoping to get constructive feedback on forum from experts and owners.