I was looking on line for a case for my Iphone 5S. The Otterbox Website had a lot more varieties as far as color combinations than in local stores. I noticed the 3D cases and realized I hadn't seen them before. I took a chance and bought one. It's great! The 3D design on the back is slightly curved so its comfortable in your hand. I have had it for a few weeks now and found nothing to complain about. When people see it, the first thing they say is, "wow! I didn't know they had those! It's cool!" I make sure they know it's by Otterbox.
I think so. I had a regular commuter case on my Iphone 4 S for a very long time. To me there's not really any difference except that there is a 3D pattern on the back that makes it easier to handle and hold the phone.