I just acquired the Line 6 backpack, and am pleased with it. It need not be used as a backpack, as the straps can be concealed in a compartment where they are out of the way, and there are conventional carrying handles on the side and top of the case. The Helix fits perfectly, as you'd expect, and there are two external compartments which are big enough for my iPad and the Bluetooth pedal I use with the it, XLR cables to connect the unit to the mixer, the AC cable, and even a little more. While I'd prefer the protection level of a flight case, in practical terms I don't actually need anything more than a padded enclosure like the backpack, and I appreciate the lighter weight, extra storage, and option of using the backpack straps when circumstances dictate.