The aircraft powered Bose headsets do have flimsy plastic connectors.
Really curiously, the connectors which are made by LEMO appear very hard to get. One can get every other size (pin count) in that exact Lemo range very easily (RS, Farnell etc) but that particular pin-count I haven't found a source for yet. If the connector breaks, the likely bill is over 100 quid.
Bose are the best for performance, but aren't built like a tank. That's why one must not lend them to other people, and one must explain to each passenger that the thing costs nearly 800 quid (at which point their jaw drops to the floor, expecting something like £20) so "please be really careful with it".