This is the one I've been using: http://www.amazon.com/gp/product/B00P4XQ3JU/

As a warning, it does have some adverse effects on GPS and signal. I've personally not noticed it, but others apparently have. YMMV.

The end result does look pretty sleek and feels good in hand, which is why I've stuck with it. Here's how it looks: http://imgur.com/a/y9Krl

for those worried about signal and GPS, you may want to choose something more like this: http://forum.xda-developers.com/showpost.php?p=56101704&postcount=13