What iphone 4 case can protect your phone from breaking when you drop it?

Soon me and my brother are going to get iphone's and i want to know which iphone case is better otter or speck if you have any other iphone cases that can protect it please let me know.

You could put the iPhone into a 12"x12"x12" cardboard box filled with bubble wrap.

I guarantee you it won't even get a scratch if you drop that.

Otterbox is the best