Im literally at the moment looking at a new case for my 4s. I have the otterbox defender now, and although its nice and has survived impact, dropped into a bucket of cutting fluid/metal, daily use of banging it with while working in the shop and what not, if you dont have it on the clip its WAY to bulky. I was looking at getting the commuter for daily use so it will fit in my pocket easier. That lifeproof looks a little less bulky the the otterbox defender i have currently which is nice and i like the fact of the waterproof. I'm bad on phones, like go through 3 a year when i had a blackberry, but when i got my iphone recently i said i was going to keep as good of care of it as i could. 80 seems expensive for a case but thats cheaper then a new phone.
btw, this is my first iphone and its the ish.