Well, my brand new Crew 8 20" (Business expandable 14" version) is packed and ready for travel tomorrow. I had posted below about choosing between the Crew 8 and the Walkabout Lite and ended up with the Crew 8. I'm not a frequent traveler like many here, but when I visit family I don't need lots of clothes as I can always wash clothes while I'm there, so even though I'm going for a week tomorrow, a 20" carry on is perfect. (And of course saves me checked bag fees at the moment.) I'm fully packed right now and it is not expanded and I may still push in a 2nd pair of shoes (besides the pair I'll be wearing).
The "business organizer" pocket is by no means huge. I am taking my 12" (Lenovo X200)...but it is inside a neoprene sleeve...so I am taking up a little bit extra room there.
I've definitely achieved my goal of packing everything I need for a week into the 20". Well...with my Kindle in my purse