I am currently using one of these, the black version.

http://guitars.musiciansfriend.com/p...Bag?sku=546157
I am starting to outgrow it, but it's worked well for over a year for me. I am considering getting the next size up, and transferring the power supply to it, since it mounts nicely underneath the board. My only beef is that it could be a little wider, top to bottom, since the power plugs stick out a bit, so it can be a little crowded, but nothing major.
I'll snap a pic at practice tonight.