Hy, Ken, I am not really clued up in that dept. apart from the fact that the one \i had but have lost in the move somewhere is a Planetronic (headband with flexible microphone)...it wasn't cheap but Pc World has a wide range as do Currys and the like. I have bought a make do until I find my good one...though I havent tried it out yet, lol, mainly due to the fact, it is now misplaced.
I know a couple of members bought inexpensive ones from ebay and they worked just fine. Sound Recordings has settings which are just as importand for a decent recording Hope that is some help, Ken, cos we'd love to have you join us, Zy