i use a thin rubber case. the nice thing about it is that i can set my phone on the counter and if something spills then my phone is protected. i also use a screen protector. however, the top left corner starts peeling away within a few days even though i replaced it because that happened previously -- and i clean the iPhone perfectly before application. hmmm.

i have to read Neil's review and others to see how well the iPhone grip works with the invisible shield since that's my biggest concern when pulling it out of my pocket or worrying about it getting easily knocked off of a slick counter.