Yes, the Rush 72 is 55l compared to 34l for the KS, so quite the difference. I tried to get some photos of the 2 bags loaded side-by-side but they really don't show the scale. But I use the 5.11 as luggage and the KS as carry on. Enjoy the Rush
Oakley Kitchen Sink+1. Whether it's inside or outside the backpack, it's designed to be very practical. Although it is twice the price of the Targus Drifter, it is worth it. I don't know if Oakley Kitchen Sink has charging backpacks. I think this design is very convenient. I saw some cheap backpacks that made this design.