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I've used the standard steel frame LW roller bag for years. It's built like a tank. I never worry about it getting damaged if I need to check it (I've wondered if an aircraft tug rolling over it would damage it?).

Stealth 22'' Pilot Rolling Bag - SKU 103NG - Rolling Bags - Browse Products

That said IT'S VERY HEAVY (even when it's empty). After 10 years I send mine back for a "B Check" a few months ago. For $100 it came back looking like BRAND NEW.

I'd buy another one in the future ...