I just got a set of DC H10-13H, which are the 13.4s with a helicopter compatible plug - very light, comfy and work well.
The quote for the adapter cord to make them usable in a fixed-wing 2-plug set up was a bit of a shock though - $180 or so; must be more than just a splitter lead, perhaps there are impedance issues to fix.
Anyway, the headset's good.