Pandaboard = no SATA. Which means to use onboard storage requires USB hackery which means super-slow file transfers.

But otherwise it looks really nice.

For this project I'm not so concerned about a few extra watts since the system is not going to be on 24/7 and is primarily intended for running in one of our vehicles only while the vehicle itself is running.

The smallest and most integrated package I found was the Zbox Nano. At $215 shipped, it was also the lowest priced option. Can't forget that it includes a case and even comes with some mounting hardware.