I am upgrading to an Iphone 4 soon and i want to get the best protective case that I can. I know Otter box and Ballistic have really good cases, but i want the best. Are there any waterproof cases for the iphone 4? If there are I would be very interested in knowing. I want the best impact-protective case, considering I drop my phone a lot. I would greatly appreciate it if you left a link to where I can buy these. Thank you