I have heard wonderful things about the Brenthaven backpacks for the 17" PB's. I looked at one at an Apple Store, but it was before I got my laptop, and I didn't look that closely. I have also looked at Tenba bags. I plan to carry my laptop and my EOS 10D and accessories together quite a bit. I could get a backpack for the PB and a shoulder bag for the 10D. That is one possibility. The Tenba backpack will carry everything at once, but it doesn't appear to have a removable sleeve for the PB. If you have the Brenthaven, a Tenba, or another laptop backpack, please let me know what you think of it. Also, if someone has experience with using a single bag for laptop/digital SLR or opinion about using two separate bags, please let me know that as well. I am looking for ease of use and comfort as well as total cost. I got good advice when I asked for some help with a wireless router last week, so I thought I would try it again here. Thanks is advance for your help.