Best case we've found - Pelican 1510 Carry On Protector Case

We're a custom manufacturer of tooling and power supplies for hydro-forming equipment. We probably have more than a dozen different military style cases we use at work for everything from storage, to shipping, to building power supplies into. This is hands down the most useful case we've come across. While it's not large enough for some of our bigger systems to be built into, it seems to be the perfect size for keeping 90% of our tooling in. We use this case for building one of our smaller hydraulic pump systems into, and a few of our techs use them for tool boxes. The wheels and handles are positioned just right and the case is of optimal size to be used as a carry-on when flying. Personally I have one I use for sales/marketing and have installed the lid organizer which makes an already great case even more useful. Highly recommended.