I have a Timbuk2 Commute XL. The sleeve is a bit short on depth. I have about 0.5 inch exposed with my XPS2. I can still secure the laptop with the built in Vecro strap. Check out the pictures in the review, you will know what I mean. The bag is large enough for my laptop, power supply, 25 CD spindle, a rolled up jacket (or sweat shirt), and all my laptop nicknaks (2nd hard drive, card reader, cables, cables, and more cables). Yes, I carry a lot of junk. The laptop sleeve is somewhat collapsable, so you can also use it as a regular bag. I occasionally use it to carry my cycling junk.
Here's a review of the bag:
http://forum.notebookreview.com/show...oto=nextoldest
I think the bag has been discontinued, but I have seen them in stores. You might still be able to pick one up.
By the way, I had a Folee Messenger 17. The bag was way too ridgid. It had just enough space to carry my laptop, power supply, and a couple of nicknaks. The bag was pretty well made and looked nice, but far less utilitarian.