I've bought two sets of Sony Stereo Headphones.. they're comfortable (can be worn for long periods) , the cord is about 15ft. long, aswell as good quality sound. They have no Mic attachment so you'll need to wear one around the neck. They go from 20-25, at best buy, the exact model num is:
MDR-CD180
I chewed through the first sets wire.. dunno those crazy battles get me nervous some times..
And for the Mic, I bought a labtec headset (with really small earphones) and hang it around my neck, with the mic positioned up.. Only problem I have are the wires which get tangled sometimes. Otherwise works great (and the headset was $15)
GL
-BM