First displayed at the 2013 International CES, NuGuard KX for iPhone 5 ($50) is Newer Technology's most distinctive iPhone case to date. While the design looks like a relatively plain plastic case, the main selling point is the soft rubber finish around the exterior that the company calls X-Orbing gel. It's supposed to protect your iPhone from pretty substantial drops, and while it adds some bulk, it's not totally crazy. Button coverage is built into…