> Park praised three aircraft types in particular: the Airbus A380, the Boeing 787 and the Airbus A350.
> The 787 and A350 nudge the humidity up to approximately 25% — an incremental upgrade, to be sure, but an upgrade nonetheless. That's because their composite-materials fuselages won't rust like metal ones would under increased humidity.
https://thepointsguy.com/news/the-healthiest-planes-in-the-a...
Haven't been on an A350 but definitely enjoyed the other two for long-haul. There's a noticeable difference when you spend enough time in that tube, Sydney to London is 24hr's straight with a short time off the plane halfway in the middle of the night. Long-haul is the default for Australians travelling internationally.