I just recently bought the Nixon Hauler 35L backpack. It has a ton of space and the way it opens makes it really easy to get to your stuff. I just went on a work trip for a week and had room for clothes, toiletries, laptop, tablet, and accessories. The best part is that it’s still small enough to carry on an airplane.
My only complaint is that the board straps are kind of small, so my board tends to slide down and hit my legs when walking. I also ride a 9” board, so my board is pretty heavy. I’m sure it would be better if I just took the trucks off.
Besides the straps, I really like the bag a lot.