It's between the old faithful clear plastic jewel cases and the newfangled Digipaks (those eco-friendly hard paper ones). I used to be a Digipak hater, since they didn't look the same as the rest of my CDs, but now (a) they're much more common, and (b) I don't really buy many physical CDs anymore. The Digis have the advantage of being smaller and lighter for shipping. On the minus side, it's the cork vs. screwcap argument, and they're a little more expensive (but the gap has narrowed, and with the lower shipping costs, it's probably a wash). 

There are also those craaazy small wallet packages, where it's basically just a sleeve for the CD, but those seem like they'd be really unsatisfying. 

So what say you?