I recently gave a survey on what the preferred setup was when using communications and sound system was via console. Surprisingly, not everyone uses a Turtle Beach nor Astros. From what I read, quite a few prefer the standard Xbox communicator or not headset at all. It seems as though headsets aren't everyone's thing. But for any pro gamer, most use them.
I use a Turtle Beach (X#, XLC, PX, etc.): 30%
I use Skull Candy: 0%
I use Astro: 5%
I just use a regular Xbox Communicator (WiFi mic, Throat Mic, Standard): 5%
I use neither a headset or mic: 5%