I'm considering a new case for my iPhone 4. I'm currently using the InCase Snap - but while I enjoy the slimness of it, it doesn't offer a lot of real protection. I love the InCase brand, so I'd like to stay with them. The Pro Slider and Hybrid seem like logical choices for better overall protection yet slim at the same time. Anyone have any experience with either of these two? Pros and cons? On a separate note, why is the Pro Slider two pieces? Seems unnecessary. Why not make it one piece? Thanks in advance.