Games with most people playing with headsets?

Well today I got the shiny, premium priced official ps3 bluetooth headset.

Other than the infuriatingly difficult to open hard plastic packaging, it's been great so far with awesome sound quality and pretty comfortable.

However, there's still the issue that so few PS3 owners have headset despite being able to use any bluetooth headset (including for mobile phones) with it, which I think a lot of ps3 owners aren't aware of. I tried Resistance 2 and including myself in most random co-op games there were 2-3 headset owners out of 8 people.

This was a bit of a surprise since I also own a 360 and almsot every person uses a headset in all games since it comes with the console.

What ps3 games tend to have the most players with headsets?

SOCOM

Socom... 99% of the time everyone in the room will have a mic.. now if only the game wasn't horrendously brokenamericahellyeah