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I guarantee if you take your iPhone4 to the beach with a Griffin case on, sand would still find it's inside.

The Griffin case does look more protective than the Otterbox, but it's a bit too much for me. I use the Otterbox myself when working.
 
I just got an Otterbox and I love it. I looked at the Griffin, but the effort to expose the camera lens alone was a dealbreaker for me...not to mention that you have to bend it back and hold it just to keep it exposed.

The Otterbox is more user-friendly and as far as protection goes, you're probably splitting hairs...
 
Damn. I hate both, but it has to go to the Otterbox.
The Griffin is fugly. The reveal case is pretty nice though.
 
I tried the Griffin on mine for 1 day and it was annoying. It's way too big and the screen is to deep. It was kind if difficult to hit the letters near the edge of the screen when typing.
 
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