Anyone know of any good headset MICs?

Anyone know any good quality (in terms of MIC quality) headsets.

I saw these and they seem ok, but some of the reviews say the voice input isn't that good.

Looking for:
-Good MIC quality.
-No more then $50
-Mac compatible (obviously)
-Prefer a USB instead of wireless

I use this: Amazon.com: Logitech ClearChat Comfort USB Headset (Black): Electronics

It has a built-in USB sound card device and a noise cancelling microphone, and sounds excellent. I wear glasses and find the headband a bit tight for long periods, though.