I'm with JWR. I hate headsets. Customer wants to 'try it out'. Let's take a poll, how many of you have 'trial' headsets you can't legitamently sell 'cause they're used and refurb cost can't be justified. Gotta say we have been successful with Plantronics CS50. Make up our own adapter cables for 76XX Panasonic. Our sales spiel is we have them, you pick them up at our store. Warranty issues direct w/manufacturer. (We test them before they leave the store.) 50% restock charge.
It works! And no more headaches. Our attitude is, "We know the headset works, but will you work with the headset!" John

When I was young, I was Liberal. As I aged and wised up, I became Conservative. Now that I'm old, I have settled on Curmudgeon.