Hi Folks, I've been tasked to pick up a case for my mom's iPhone 4 for xmas. She wants something very thin, but that also adds some grip (she's dropped her iPhone a bunch of times already). I saw a post on the SGP ultra-thin case (http://forums.macrumors.com/showthread.php?t=1049810), which looks nice, but i'm not sure how much more grip it adds. Anyone have more suggestions? Thanks a bunch!