I too have a Lifeproof case for my iPhone 5. While I do like it, my first case arrived defective. It took over a month for Lifeproof to even respond to my request to replace the defective case - which was reported the same day it arrived. They then had the gall to make me pay to ship the old one back. That REALLY sucked. Just sayin'.
I also have a Lifeproof case for my
iPad. It IS heavy, but it's been great.
Lifeproof makes pretty good products, but the "Service" in their "Customer Service" is the part of the definition that says "What a bull does to a cow". I have a REALLY hard time with that.