The armrests on the front doors on my X (White interior) are almost perfectly flat/level and actually rather comfortable. I currently have a signature X loaner with black interior, and the door-side armrests are at an angle--perhaps 60 degrees or so--and not nearly as comfortable. Is this a difference between the signature X's and, the black and white interior, or something else? If I were to get another X I'd like to make sure it would have the flatter version. Thanks!