I recently got a Brain Bag & a Vertical Brain Cell. :) So far, the Brain Bag is the only bag that can comfortably fit both my laptop & my iLap (http://www.raindesigninc.com/ilap.html) without stretching out the bag or putting strain on the zippers.
I used to carry a separate tote bag for the iLap, but this is way more convenient, and I can also stick in all my other supplies. :) Yay! :)