Crutchfield Customer Review (What's this?)
Caveat: I bought this on the advice of a Crutchfield advisor for a car application, not bicycle. I already had a Pro.Fit mounting bracket installed in my car and needed a more secure cradle mount. This fits the bill nicely. It's well-made, was easy to install, and will hold different types of phones securely. It has two sliding prongs at the base and padded gripper arms on the sides with a lock button so the teeth in the track don't wear out. Given the mounting plate it comes with, that has the elastic cord, it should work great on a bike if you want to use it for that, though.
Pros: quality, versatility, ease of installation