I carry film-making gear in this case - a shoulder rig, some small LED lights, blimp, cables, microphones, batteries, charger and so on.
Pros - it's big but not too big, can hold lots of equipment, can be used as a table or seat if necessary and is robust. Cons - this is not the fault of the case, but I wish I had got one with castor wheels. I often have to carry this myself and it's heavy and awkward going through doors, down steps etc. It can be hard on the back. I've had it for a few years and have had zero problems with it, it hasn't had heavy duty use, but I believe it would stand up to it.