def otterbox defender case without a doubt. my dad does construction and i got him to get the defender case when they come out, actually pre-ordered it, and he loves it. he dropd it on concrete like the first day he had it (from about 3 feet btw) and no problems and has dropd it a couple more times since then. plus what they dont tell u which they should cuz its a great feature is that the bottom speaker holes have a tough cloth like material where the ports are(no other case i kno of has that) so dirt wont get packed n the speakers, etc.(that has come n handy for him alot). jus 2 let u kno the headphones port cover will wear and brake off over time, and he doesnt even use his headphones with it alot but the dock connector port on the bottom is still holding strong and of course he uses that everyday(alot actually cuz he watches alot of youtube, so he charges alot). the holster clip it comes with wont last but a month or so, his broke maybe from being to rough with it, jus to let u kno if you do get it. and make sure u get a good seal on the screen when u put your fone n it so the air bubbles dont come up, it can affect your input with your finger but nothing real major. and for reasurance, he has taken his iphone in all kinds of rough, rough places with the case on it and it looks like new when he takes it out and cleans it(not that its dirty he jus likes doin it 4 sum reason). sorry 4 the long post, im real thorough, if you hav ne questions bout it let me kno. another note, it does add a little extra bulk to your iphone but well worth it imo.