I still have the otterbox defender. It is bulky but when im at work running or training my softball team no need to worry if i drop the phone while were practicing.
I got the Speck case from AT&T and already it is falling apart. The part where the hard plastic mates with the rubber is separating. It'll be going back to AT&T for sure. I'm now looking for just a plain rubber case. Maybe thinking about one of the cheap TPU jobs from Amazon or Ebay.