I would; consider the Pepper-Oil over the X5D.
I looked and looked/test drove the X5's... really wanting to like one enough to buy. They are good looking rigs.
I didn't want to like the Cayenne (911 owner - you know)
Anyway, I have a Pepperwagon and really love it.
maybe the BMW's just don't fit me -not as comfortable. Maybe it's that the X5 seem crude by comparison.
ymfmmv