Well if we're describing favourites then I use a Tom Bihn Brainbag. I bought this bag when I owned an a21p thinkpad (9lbs) and at that time also invested in the "lap dog" which is the protective pouch for the computer. I still have that pouch and I also have the pouch for the Tibook. The bag lets you securely fasten the pouches into the bag. This bag has been to Thailand about 3 times, England 2 times and the US 2 times. It's the ultimate in travel comfort for my computer equipment. It's not an every day bag per-se because it's a little too rugged for that but it's good for travelling. When I use to have my Canon EOS D30, Flash etc and the A21p this bag would regularly carry around 20kg's of gear so I added two Domke Postman pads and put one on each of the shoulder straps. These days though this bag is just carrying my Tibook and small electrical items so it's overkill for my needs today but after 3 years owning this bag and many trips it shows no signs of wear whatsoever. What surprised me the most was the strength of the shoulder straps in particular. They've never shown any signs of coming away from the bag itself. This is one piece of equpiment where "Made in USA" really has some meaning. (Note: I'm British and Australian)