I recently recieved the Microsoft Lifechat LX-3000 Headset from Club Live. It was a great little unexpected gift, so I was happy to recieve it!
The headphones are well built. They are sturdy, have a long enough cord, and sound great. There is also a remote control on the headphones, which I do not like all that much, but I only listen to music and games though them and etc. They are very comfortable on your head, and block out sound (not all, but enough). I have yet to try the microphone, but it is good I assume.
I have not used the software, as the headset was plug and play for me. The unit itself is made for voice conferencing and such. I do not use it for that, however, but I feel that it would do very well if that was your primary use for the unit.
I would buy this if you were searching for a cheap and great headphone/microphone pair. Great quality and affordable!