I've been using the Microraptor backpack for three months and I am very happy with it. The quality is superb and the carrying capacity is excellent. Having a bit of a lazy streak, I wanted a backpack that was big enough to allow me to put the P3 in without removing the props. I also prefer a backpack to a hard case because of the weight difference. Backpacks are a lot lighter, and it gives me the option of carrying it on a motorcycle. The Microraptor has plenty of storage for extra props, batteries, charger, Tx, and tablet or phone. But it also has two additional pockets on the outside. One of which is large enough to hold a full size iPad. Another quality that I looked for when shopping for backpacks was open space in the main compartment. Since I always fly with a Carbon Fiber Camera/Gimbal Guard I didn't want any extra case padding that would get in the way. And I didn't want the hassle of removing it every time. In addition to the padded backpack straps, there are handy carrying handles on three sides and it also comes with a detachable shoulder sling. My only criticism of the Microraptor backpack is that it only comes in one color, olive drab. But I have to admit, the color has kinda grown on me.