So I'll keep using my trusty Co-Pilot. It's just a tiny bit smaller than I'd like:
* If it were even 1/8" wider, my Sony Vaio Z would fit easily with its minimalist Ultrasuede sleeve. Rather than fitting easily with no sleeve, and inconveniently tightly with sleeve.
* I use my Side Effect as a purse. When traveling, I like to put my purse in my small carry-on and make that my personal item. My Side Effect does fit into one of the side pockets (I mean the either-side-of-the-water-bottle pockets) of the Co-Pilot -- but it's a squeeze.
Ideal for me would be a Dyneema bag that has the same design as the Co-Pilot but is just a little big bigger.