I’ve bought several headsets and one clip microphone now. None of the microphones worked well. They were all fairly cheap (up to a few dollars each). In Skype calls the other side frequently had trouble hearing me. I recently bought a “Snowball USB Condenser Microphone with Accessory Pack (Ice)” for $65.50 USD, or $82.74 (my the US dollar has strengthened!). Hopefully, this will work well when it arrives, to the point where I can converse with people on Skype without them having difficulty hearing me. I’ll post an update when I receive it and try it.