I kept searching and found the range that Wenger has several models of high capacity backpacks (comments indicate that these bags are very strong). However the look suited me except Wenger Carbon black for Mac 17 ". After thinking the Logic box Wenger 60 or 77, I chose the Swiss bag. I'm not disappointed, it matches my needs and may even receive my computer MSI 18 ". It is super strong and very comfortable.
I put a PC in 14 "or 18" as needed, tablet, my paper documents, my USB keys, my external hard drives, all chargers (5 in all) and office equipment supplies (pens, post it, ...) and of course my mobile phones. The bag is large but discreet enough to carry in the meetings.
I recommend this bag for those who want both solidity, carrying comfort, plenty of storage, a bag that hold water when it is on the floor, with an excellent value for money. The price difference is about 20% more compared with bags of the competition but over time the Wenger held better.