I already dropped mine once, and I had the speck case that I picked up in the Apple store. It is form fit rubber protection that is made for the iPhone. It works great. All the external buttons are easily accessible or work through the rubber. It’s already paid for itself.

Another case we tested was the “clear” hard shell. This also works well, but I like the feel of the spect personally.

The downfall with both are the cheap plastic belt clips. I tried both and each one does not securely hold the iPhone in place while on a belt. If I find an adequate belt case I will post a message.