Re: Lifeproof cases
I agree with athhud - if you need a 100% guarantee of something waterproof your not going to get it. If you need something that is way better than anything else currently on the market get the lifeproof case.
Heck, put it into a pelican case or a solid block of concrete - its eventually going to leak, its just a matter of :
time
pressure
temperature
so, nothing lasts forever - however I used the old bulky otterbox case on my 3G which my wife spilled a bottle of water on - toasted until I took it apart and cleaned the motherboard etc.
So far, no spills or anything else has given me a negative impact on my 4S, and its goes everywhere I do.