I have a ful of poorly defined model name that I got at Target about a year ago. The ful site isn't working for me, but it's on the Target site:
http://www.target.com/p/ful-backpack...m=ful+backpack

It's similar to the Tenman. I can fit two 15" Macbook Pros in the backpack slot, and they go in and out pretty easily at checkpoints. It has an iPad slot in the main compartment, along with a second elasticized compartment (e.g. for power supplies) in the main compartment, and you can see the outside ones.

I typically have the two laptops, their power adapters, two phones, an ereader, and an Eagle Creek Pack-it cube that holds a pair of stacked 7" grid-its with all my cords and adapters. I stick sunglasses in a case in one of the side compartments, safety glasses in another, and keys go in the outer long low one. The small compartment on the outside back gets my earphones, extra battery boosters, and cables to connect them to charge phones/pads so they're reachable in flight. I stick my 1 qt ziploc bag in the outermost of the three large comparments (the one with the pen and biz card slots).

Configured like that it weighs a ton, and you'll need to get work done on your back after a run through the airport if you one-shoulder it, but it carries all the electronics I need to carry.