Which iPhone 4S case is right for me?

I have a iPhone 4S that is nearly a year old now and an otter of defender which is the same age. I know my otterbox is nearly out of warranty so I'm looking into a new case. I loved my otterbox but I feel as tho I need something waterproof since that is my bigger fear being that I have already broken my original iPhone in water. Also I can't seem to keep my phone in my hands ever! I drop this poor thing probably 10 times a day with at least 1 big drop a week! I have broken my otterbox twice already and now have a crack in the 3rd case! With a little bit of research I'm looking into either the lifeproof case or another otterbox even tho I really hate the bulk of it and it's not waterproof, but I have heard that lifeproof won't replace the case if its broken and isn't as durable as the otterbox. Bottom line is I need something durable like the otterbox defender, water proof, and at least a year warranty on the case. Also I would like something slimmer then The otterbox defender but that isn't a must, however I can't have anything bigger then the defender because I already have trouble fitting it into my pockets! Any suggestions are highly appreciated!

Life proof is still your best bet. I'm not aware of whether they will replace it but I can't imagine they wouldn't. If not maybe the retailer you buy it from will instead. But in the end life proof is a good option, and they actually are quite durable.