My first case for my iPhone 4s was an Otter, the strongest protection offered by the retailer that sold me the phone. It did a great job protecting the phone, but was huge. And bulky and big. And cumbersome.
I watched the videos showing iPhones being dropped from 20 feet onto a concrete floor and decided to try this smaller, more attractive case.
Worked great. My 4s remained intact after much hard use, including dropping it on the floor on purpose to impress my friends and colleagues (they weren't impressed, but it was fun anyway). Just upgraded to the iPhone 5s and placed an order for a new case from OWC. My wife gets the old 4s, but didn't want the OWC case because it wasn't sufficiently flowery. My son, however, was happy to get the used case for his 4s and threw his old one in the trash.
The only problem I had with the case was that a Verizon phone charger was too large to fit into the hole in the bottom of the case (nothing a little quality time filing down the charger couldn't fix).