Got the iPhone 5 and love it. I need a Lifeproof case though....would hate to cough up $750 to replace it if I destroy the thing!
I have a 5 with the lifeproof case and I absolutely love it! It's well worth the investment. Takes a couple days to get used to it though. They are much lighter than the otter box and are definitely waterproof (trust me on that).
