it would be annoying to get one that is not right for me.
... not to mention expensive
I would make another call to Headset Services - ask for Anthony Beckett in Sales - he'll put you right !
Tell him what your local Avionics dealer said, and what type of socket you are plugging into - it will probably be standard "UK NATO" as in the picture below - they can provide your new helmet with any version of connector.
Make sure though that you specify the correct one as the NEXUS plug - also referred to as US NATO is very similar but there is a difference in diameter of the mating shaft - the UK NATO is slightly larger than the US NATO version ( by about 0.4mm ) making the two incompatible !
