I've used other cases before for previous phones, but I always went back to the otter box defender. While it isn't waterproof (which is why i've tried other cases intially) it's impact protection is second to none. Lifeproof is great for dust and moisture, but if you were to drop it (which i would assume constitutes the majority of damage to mobile phones) it doesn't provide a fraction of the protection of the defender series from Otter Box. What I LOVE about the new iPhone 6 case is the slimmed down frame. It's no longer as bulky as previous iPhone cases were. Yet, the protection seems to be far from compromised. I doubt that I will ever use anything but Otter Box for my 'mobile electronics protection' needs.
Pros: High quality, Durable, slimmer than previous models
I must say, Otterbox never fails to impress me. I have used their products (Defender series) with every cell phone that I have owned (if the case was made for the model) and I have never been disappointed; after using this case for my iPhone 5, the feelings remain unchanged. Amazing. I have a coworker that purchased a Lifeproof case and it was the most over-priced, flimsy piece of plastic I have ever seen. Waterproof and dust proof? Maybe. Crush and fall resistant? Definitely not. He returned it immediately and went with the Otterbox Armor. The Armor is built very well. It is clear that a great amount of attention was paid to every detail of this product and I firmly believe that the bar for the level of protection has been set insurmountably high now. The interior provides ample padding for drop protection and the case is so rigid that a D9 dozer could run over the thing without worry. I dropped my phone in a stream while hiking Mount Whitney and the rubber gaskets did their job; no sign of water any where. My ONLY COMPLAINT is the sound quality for those that call me. When holding your phone to the ear to speak, people on the other end will have difficultly hearing me; it sounds as though I am speaking into a tin can. However, when talking on speaker phone with the phone away from my head, the sound quality is fine and I have had no complaints. I think that when the phone is held too close to the source of sound (typically the mouth) the waterproof membrane that protects the microphone must buzz or distort the sound in some fashion. When held a reasonable distance away from the mouth, everything is fine. Other than that, this thing is flawless. PLUS, you can open and close the case easily and quickly without worry of compromising the 'protective integrity' of the case.