What kind of case (if any) do you use?

ive had tough cases on almost all my smartphones, i couldnt imagine taking it naked anywhere! currently im using an otterbox defender case on my iphone 5, really like the case the only issue to me is that the ports are a pain in the ass to get too with out long nails and that the screen protector messes with the tocuh responsivness slightly. does anyone else use a tough case (kraken, lifeproof, ballistic..) or do you like to go naked? let me know what you use and why