What's a good/cheap PC mic I can run down to Radioshack or Best Buy and get?

[Bebpo]

I want a mic for my next L4D playing session because it is soooo needed.  I have a non-fancy computer so it needs to be USB probably. 

Should I get a headset like the X360 one?  Should I get some thing that goes in your ear like bluetooth phones?  Should I just get a mic?  I've never owned a mic before for my PC, so I'm not sure what works well for gaming.

I'm looking in the <$30 range.

[Draft]

You want a mic, or a headset?

Either way, don't get USB. Very expensive. Just get a Plantronics.

http://www.newegg.com/Product/Product.aspx?Item=N82E16826106069

Overnight ship and it will still probably come in below $30.

[Draft]

If you already have a decent pair of cans, just attach this mic, and voila, you have a much better headset than any actual headset.

http://www.amazon.com/gp/offer-listing/B00029MTMQ/ref=dp_olp_2

[Bebpo]

Hmmm...

The thing is that I don't play with headphones.  I use tv-out and play PC games on my home theater setup. 


Also, is there one that works on both PC & X360?  Because I hate the standard X360 one.  Hell one that worked on PC/X360/PS3 would be even better.  I've never used a mic on PS3 because the shitty bluetooth that came with Warhawk is shitty.

[Draft]

Don't know.

PS3, maybe. Xbox, I doubt anything that's not MS branded and doesn't plug into the controller is going to work.

[MrAngryFace]

I should get a headset too I spose