Best protective cases for iPhone?

What do you think the best ballistic case there's that would make sure my phone doesn't crack if I drop it? And do you think any of the ballistic cases are better than the otterbox defender? I want a case that protects against drops since I've broken my screen twice in 6 months but one that isn't too bulky.

I have an Otterbox Commuter and its awesome. They come in tons of cute colors and the case isn't too bulky but feels heavy enough that it gives you the sense that it's protecting your phone.

No one can beat Otterbox as far as protection of your iPhone is concerned. Most of us associate Otterbox with the Defender series but it has got several other options like Prefix Series, Commuter Series and Reflex Series. The ultimate option is Armor series which is Waterproof, shatter-proof as well as dust-proof.

I recommend OtterBox Defender Series Case. It is under $30.

http://www.amazon.com/...005SUHRH6/

it has polycarbonate layer and an outer silicone layer which provide complete protection. It also has built in screen shield.