I have yet to use the JAYWAYNE Expandable 40-64L Military Tactical Backpack - 3-Day Assault, for the purpose I purchased it for, but I think I might like it. I used it to go grocery shopping with and the 40-64 L compacity worked out very well so I know when I use it for travel I will be able to get more of my need inside of it. The straps felt a little flimsy like it might snap if too much weight is in the bag, but it held my groceries so maybe they will hold. The cell phone pouches would have been a nice touch had they were big enough to hold an actual smart cell phone. One pouch looks like it can hold an old school flip phone and the other one my smart phone can slip into but it's not deep enough so that the the flap can close to secure it. Also the bottle holder is kind of small also.. Looks like it is only big enough to hold a bottle of water and not a big size water bottle. Also I don't care for the laptop holder. I like when there is a laptop pouch. This just has a strap inside to hold laptop. The pouch kinds of protects the laptop for other items in bag that could cause damage like scratches. It could use better compartments inside. Most are not made to hold anything but flat stuff. I am comparing this to my old backpack.