Spottie Darling those machines were like most men - I used to whack them with my hairbrush and they worked fine.
I never had any tourble with them - and then I used AAs - and I was bowled over at how user firendly and easy their machines were.
I never fly *A or the other one so I really do not know. I would never fly either as I might conceivably be on something that was connected with Lufthansa on the one or Air France on the other.