I used pelican boxes for years until the airlines went to 62" and 50# enforcement. The cases are heavy. After that I changed to LL Bean duffels. There are four divers in our family and all four have used the LL Bean Adventure Rolling Duffles (X-Large, 95L) to put their SCUBA gear in. I also have a 135L Duffle, but it's too big, by the time you fill it, it's going to be over 50#. After 15 years the rubber wheels gave out. The bags are still fantastic. I've never had any gear broken in them. I recently bought an Akona duffel to replace one with broken wheels. I can tell you the Akona quality is substantially less that the LL bag in my side by side opinion. However, I never check a regulator or dive computer. My carry-on is Swimsuit, Mask, Computer, Regulator. Check everything else. I've learned that if I can arrive with those 4 things, I can dive right away if my bags are delayed. Ask me how I know LOL.
Plus my wife pays the $8 and get's our name monogrammed on them, easy to spot.
Note they have restyled the bags so they stand on end. I have the old style and one of the new style. Slight differences but basically the same for my purposes.