Bought these mainly to be able to do my podcast on the go, and wanted to have as close as possible the same quality as I can have in my small studio, where I otherwise use a big membrane condenser mic. Tried the MMX-300 headset at first, but unfortunately there were some ground hum issues, so I gave these a go, and I'm very satisfied.
The microphone is very good for being put on a headset like this, and is what I wanted. The USB version also is convenient when going with a laptop, and I think I can manage to run it side by side with a sound card with my main computer if I like.
Nice to have this decent headset with a condenser mic on it.