Mark, my wife and I have had our 4s iPhones in Lifeproof cases for over a year now and we love em. They are tough, unobtrusive and have held up to abuse quite well. I've dropped my phone on more then one occasion in snow, puddles and on concrete without a problem, and my wife abuses hers on a daily basis when she throws it in her portable junk shop (purse), plus the case does not seem to impede the signal strength.
Yes they are a bit pricey, but they were worth it to us and I will buy new ones for our next iPhones when we upgrade. I hope this helps.
