I only use Pelican cases for traveling. Pre-Corona season I would average about 50-70 plane rides a year. Pelican cases are the only thing that last. Yes I have tried, Tumi, Rimowa, Samsonite, etc.
Buy them when they are on sale and have a promo code, usually around this time or Black Friday. Almost all my cases I have paid around $200 +/- $50 for. I own all different sizes from the 1607 (now discontinued), 1627, 1615, 1637 and the price is actually A LOT cheaper than good quality luggage like Tumi, Rimowa etc. and there is many more size options to suite your gear
Personally I would rather have stuff like my rebreathers, DPV etc be safe in a pelican case that I know is not going to break then in regular luggage. I spend alot of time in remote diving areas think jungle cave exploration trips. Remote SE Asian diving trips requiring dodgy local transportation on public boats, buses, trains etc. with my pelican case on roofs, boat hulls, back of trucks getting full rain, dust, mud, snow, salt water etc. I would not want my equipment in anything but a pelican case. $200 for a good case seems like cheap insurance for such expansive diving gear.
Also as far as the weight goes check the specs on the Air cases I listed above. If you compare the weight to Samsonite, Rimowa or Tumi the weight is the same or maybe just 1kg more.
Also yeah I know companies like Samsonite make some ultralight $800 roller bags that are 3-4kg but trust me I have tried them after about 20 plane rides the wheels brake off, the corner get dented in and the outershell cracks. They are just not made to have heavy diving gear in them and be thrown around by gorilla airplane luggage handlers. The 2-3kg I will gladly take the 2-3kg extra weight of a pelican over the floppy ultralight bag. Remember most "luggage" is made for the once a year traveler that puts soft clothing in the there luggage not heavy chucks of metal like diving gear.
Most recent remote cave exploration trips I went on in SE Sulawesi.
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Or sometimes I just wear my rebreather like a backpack and put it on the seat next to me
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