I finally pulled the trigger on getting a decent headset for online vid-conf work. The Logitech® Premium USB Headset 350.
With better sound quality than I can probably detect (I’ve not the best hearing), it sounds better than any of my previous headsets. I usually buy cheap ones and end up being disappointed in them, not that this unit is really expensive, I made sure it was of good quality and read lots of gaming headset reviews, it was $40 at my local Wal-Mart and I’m glad I got it.
Just a few points on it. It’s very comfortable, has a USB connection (drivers ship with Windows/OS X), and automatically sets itself as the default playback/record device when plugged into the computer. Reverts back to previous defaults when not installed.