Pilot luggage
 

I do 6 flights as a Pax every 2 weeks so I went out and bought a big Rimowa suitcase and love it. I work 2 weeks on/2 weeks off and fly to the worksite so I needed a good bag. I used to have to buy a new case every 18 months or so and was sick of buy new cases for them to fall apart. The Rimowa comes with a 5 year warranty. Love the case, easy to move around and so far, all good.

TUMI... last years

Briggs & Riley. Their Lifetime Guarantee is for real, and includes ALL damage - even that caused by airlines.

Find a closeout sale of last year's models and save a bunch.

During my long haul career for the last 10-15 years I used a large rolling duffel bag. It's a High Sierra 60cm tall double deck bag. The advantages are many, including the ability to tighten up the straps when I was doing a shorter trip and didn't need so much room. Being soft the baggage handlers never broke it either. Yes, I know, the bad guys can cut it open or bust the zippers but who packs real valuables in a hold bag anyway - no one with any brains. Some are very heavy when empty so check it out. I still use it when I go away on holidays.

If someone else is doing the loading, I would strongly consider a hard shell. Reasonably water resistant and definitely baggage handler resistant. I use a Samsonite and it's pretty tough. Every so often I have to replace the wheels but it's about 5 years old and has lasted a lot longer than any Travelpro I have owned.
I do tours of 6 days and that often means airlining. For piece of mind I secure it with a pacsafe strap and that also helps with the identification on the carousel. :)
Many colleagues use Samsonite and the more flush ones use a Rimowa. There's the alu ones and the plastic. The alu looks flash but the dents remain.

Another vote for Samsonite. Have a large hard case one that only weighs 3kgs. empty. Built in handle, fairly strong wheels, so far.

https://www.google.com/search?q=Samsonite+suitcases&oq=Samsonite+suitcases&aqs=chro me..69i57.8002j0j8&sourceid=chrome&ie=UTF-8

I use a Samsonite backpack (sadly no longer available). I fish out what I need and stash the bag elsewhere. Other crew use wheeled bags, others use different backpacks. Very few crew at work use what we'd call "pilot cases or doctor cases".

Worth a consideration ...
 

... especially if your wherabouts might lead you to hisoric old towns or places with a fair amount of snow:
https://www.ortlieb.com/duffle-rg
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Proper wheels and a stable axle. Not these toy thingies even Rimowa uses these days.

Luggage - recommendations
 

Time to upgrade my old bags, any recommendations as to what works these days?

Funny that from the FOs I fly with, those with the lowest experience own the most expensive Tumi gear.

It must come as a bundle with the TR :p

Rimowa if you can spare the cash, Samsonite if you can't.

Samsonite, hands down. If any part breaks, they will try to replace it free of charge. I've had to replace wheels on one of my big cases several times, despite offering to pay, Samsonite have sent them for free. Now that's customer service

My experience indicates that the cheap ones are best. Its easier for the airline to replace damaged cheap cases with their cheap case from their stock for major or even minor damage.