I have the base model. Would have probably purchased the M sport if it came in glacier silver. I thought the X Line was pricey for what you get.
Don't have the BMW apps, don't miss them.
Do have the Ultimate Package with PDC/Cam. At first I thought I wouldn't really use it, but I do appreciate having it now. The rear window is smaller and higher (than our X3 was) so I do find myself using the camera quite a bit. It's a no-brainer for $185.