I know a lot of people recommend using the MX500 due to price and quality. We'll seeing how the price for the MX500 is in the $20 on Amazon.com right now. You can get the JVC Marshmallow which is on sale @ CC for only $9.99 right now.
So far the reviews are great.
http://www.head-fi.org/forums/showthread.php?t=212259&page=4
http://www.head-fi.org/forums/showthread.php?t=217282&page=4
http://www.circuitcity.com/ccd/prod...FEED->PRODUCTS&cm_ite=1 PRODUCT&cm_keycode=66
I am picking up a pair as soon as I am out of work today. Will post my review once I get them and break them in.