Purchased extreme guard full protection, haven't received them yet but for ten sets, the total was $17! Used code 3for83. Looking forward to checking them out.
For actual cases I bought the incipio feather in black. Its very nice and slim but I suspect it won't protect from a drop but may keep you from marring up the back. It digs in with pointy edges the way I hold the phone but I'll still get use out of it.
Also bought the incipio dualpro cf. I love this case, looks good, minimal bulk and appears it will protect very well.
I recommend the dual pro but probably wouldn't the feather. There are other minimalist cases out there that probably won't dig in uncomfortably.
I'll post back once I receive the extreme guards.