I got an iPhone 4S recently after previously owning a 3GS. I just had a clear case on my 3GS with one of the film screen protectors and dropped it a few times without any screen cracking. The 4S however is incredibly slippery because of the glass backing and I know it's only a matter of time until I drop it. I've been looking around for the best case to protect the screen for a while now and the general consensus is the OtterBox Defender but I'm just worried it might be too bulky to fit in my pocket. I know the Commuter is less bulky but it doesn't add any screen protection other than the extremely thin rubber band does it? I've also looked at the bumpers which seem pretty decent for protecting the screen from drops. Does anyone have the Tech21 Impact Band?