I already have a CandyShell on the back so I don't need/want full body coverage. But I was considering getting a screen protector and installed from an Invisible Shield kiosk at the mall. They said after tax and install, it's $20 and they do it to eliminate bubbles and all that. What do you think? I've had iPhones in the past and not had screen problems. But the retina display is so beautiful I might want to protect it as much as possible.