Shelter ($30) is the newest iPhone 4 case from BodyGuardz/NLU Products. Comprised of a polycarbonate plastic body with TPE rubber down the center of the back and around the front edge, it's a rather basic shell that provides a respectable amount of protection. There's coverage for the Sleep/Wake button as well as the volume rocker -- we liked the feel of these. All of the openings that one would expect are there, and the case forms the slightest…
