The Defender, a Case Built to Protect
In a very DEFCON like mentality, this class of cases come with three lines of defense.
1. A hard polycarbonate skeleton that fully encases the phone.
2. An airtight screen protector that protects all of the glass as well as the sensors on the front of the phone.
3. A soft but rugged silicone skin that surrounds the entire phone.
The hard skeleton shell which surrounds the phone contains three windows, two on the back one on the front. The two on the back are there to provide viewing accesses to the Apple logo and more importantly the camera. To date, this is the only case I've come across with a protective window for the camera itself. The window on the front is in fact the actual screen protector which is fully attached and sealed on the skeleton. The skeleton itself is designed to recess the screen by about a 1/4 inch, which is important to reduce the risk of cracking the screen if dropped on its face. The recessed screen and protector raise two of my only concerns with the case.
The first being that the gap between your face and the screen makes it slightly uncomfortable to talk on, specifically in a noisy place that you need to press the phone harder to your ear in order to hear. The other being that screen protectors get scratched (that's what they are supposed to do), but having one that is attached to my case means one of two things. Either I have to buy a screen protector for my screen protector, or I have to buy a new case every time the scratches get too bad. Not the end of the world but depending on how long it takes to get marred up it could quickly turn into an expensive proposition at $50 a case.