I go through a lot of bags trying to find the perfect one. Quite literally one every 3-4 months for the last 4 years.
Finally bought the 30l Peak Design backpack. Best thing ever. Worth every penny.
I can fit:
Two laptops - HP 1040 and Lenovo Thinkpad S12
Two chargers for the laptops
1x 2 port USB charger for phone
8" Tablet
2 Moleskine notebooks
1 camera, either Sigma Dp1 Quattro or Sony RX100
2.5 USB backup drive
Several batteries for the Sigma camera
Audiotechnica m30 headphones
All the infernal RSA tokens I have to carry
USB cables, 2 ethernet cables
10000 mAh battery pack
Other odds and ends... mug, access cards and what not
The peak design bags have dividers they refer to as origami dividers. The majority of the volume of the bag can be customized using the dividers.
The is a laptop sleeve between the back of the bag and the main compartment. In that sleeve there is a divider. I believe the divider is meant to separate a 15" mac book and full sized ipad. The sleeve is large enough for my 14" laptop and my 12" laptop. Additionally, the sections you use to get in to the main compartment have padded organizers.
The bag is really clever and seems to be incredibly well built, time will tell on that.
Finally bought the 30l Peak Design backpack. Best thing ever. Worth every penny.
I can fit: Two laptops - HP 1040 and Lenovo Thinkpad S12 Two chargers for the laptops 1x 2 port USB charger for phone 8" Tablet 2 Moleskine notebooks 1 camera, either Sigma Dp1 Quattro or Sony RX100 2.5 USB backup drive Several batteries for the Sigma camera Audiotechnica m30 headphones All the infernal RSA tokens I have to carry USB cables, 2 ethernet cables 10000 mAh battery pack Other odds and ends... mug, access cards and what not