Thanks to the posters here. I'm new to the 320 and just decided to go with Telex Airman 8 with the dual GA plugs and an optional Airbus converter. About $410 for the headset, and $30 for the converter. Shipped just under $450. Should get it in a few days.

Now, hopefully, I'll get a chance to use it.

Thanks.

P.S. Please don't let me know if I could have got it cheaper somewhere else.