I test drove one at the dealership. The wind noise at 65mph is a lot louder than the X5 that I currently have or the Lincoln Avaitor.
I was hoping that it may have to do with the lack of rear spoiler or something that can be fixed.
Please keep me posted. I agree that it makes no sense to buy a "loud" Lexus. The LS that I used to own is one of the quietest car that I've ever been in and I loved it.