Hello, I have the lowpro 250 and love it, it easily fits everything and more! I can use the pull out mavic case in the bottom to carry if I don't need all the stuff in the backpack, the pull out case fits my mavic, 2 extra batteries, connect cords for rc, gear extensions, spare props if I want, gimbal sun hood, and other small pieces if wanted. In the backpack I have a heli pad, charger and hub, spare props, manual, notes, remote controller, spare cords, another battery, room for my water floats if mission is over water. I can also put sweatshirt and water bottles in or strapped to outside, it's a very versatile case.