Can anyone recommend me a simple/elegant sleeve or case for the 2012 13" MBA? I have been looking at the Ion Carbonshell case and Brenthaven sleeve if that helps give you an idea of what I'm looking for. I am currently using the Brenthaven Econprene sleeve which I originally got for my 13" MBP (which since has been sold) and Brenthaven doesn't make Pro/Air specific versions of the 13" sleeve. My current Brenthaven sleeve has a manufacturing defect. It's hard to describe it but it essentially causes the interior lip that prevents the zipper teeth and zipper pull from touching the laptop to not do its job. There's extra material stitched to the side trim that causes the two interior lips to not meet when the zipper is closed and pushes the zipper teeth and zipper pull towards the interior. The zipper pulls themselves show extensive wear/tear. Anyhow, I'm in the market for a new sleeve or case. Suggestions?