I may be getting an iPhone 3G soon. However, I'm wondering what case would be the best for what I do. I'm in high school, so I need something that will protect it everyday there. I also do lots of outdoor activities that need a case that will protect it while in backpack (the suede compartment meant for electronics), my pocket, and my hand. I want something durable and slim. I was thinking of the Invisible Shield, but it doesn't seem to have enough protection. I don't have a large budget, since the iPhone is going to be my only Christmas present this year due to the price and the monthly bill. I'm also paying for it partially, so realistically I barely have a budget of $30-$40. Thanks for all of your help!