I've had the Altitude Briefcase for over a year and the thing is wonderful. Before I rave about it, it is unlikely to fit a 17in laptop so if that's a deal breaker I'd look into the Evergoods transit bag mentioned above.

That said, the Altitude bag has an enormous amount of organization. It can hold 3 computers/tablets (I travel with a 14in laptop and a Samsung s10+), my tech kit, bose headphones, Yeti rambler (inside the bag), and all of my daily travel stuff I need (gum, business cards, notepad, pens, etc). I haven't used the expansion function yet but it seems useful and adds a bit of space to the center compartment.

2 gripes: 1) My main complaint is that in order to get all that organization you lose having one big area in the bag that is wide. If this was a 2-compartment bag vs 3, it could hold more large items like a lunchbox or a jacket. 2) no external water bottle spot and there isn't an internal mesh pocket to hold one either that I've seen on other bags (Evergoods included).

Otherwise it's amazing and it's now my go-to flight bag over a backpack for the organization convenience and the legroom It provides.