OtterBox has made a name for itself as the de facto heavy-duty protective case company, and the Defender Series Case is among the best we have seen. Moving into models aimed at everyday users then makes sense—not everybody needs the most durable case in the world, but a thinner, lighter, easier to install option with the same pedigree is a good idea. One of those options is the Commuter Series Case ($35) for iPhone 4. Combining two layers of…
