I just put that on my Amazon shopping list. I've been satisfied with the Delta mount for my iPhone 4s, but it won't fit with the Mophie Juice Pack Air attached. I need the Mophie for longer battery run time so I'll need a more adjustable mount.

However I may see whether Delta makes a larger mount that will work with my iPhone 4s and Mophie attached. The Delta mount is very secure and the plastic frame completely covers everything except the screen so it should be well protected in a crash.