Quality Mono Ear Phone/Bud

[roo_ster]

Howdy:

I was wondering if any of y'all have experience with quality mono ear phones? (Single ear phone that fits in the ear and all sound is pumped into this single unit.)

I dislike having both ears occupied when listening to music on my generic MP3 player or the PC.

I have used the Radio Shack version, but it does not provide the volume/quality most any other two-phone/bud system.
This is hte one.  I don;t use the ear hook, just the bid:
http://www.radioshack.com/product/index.jsp?productId=2102543&y=5&y=10&x=12&x=16&retainProdsInSession=1&retainProdsInSession=1&numProdsPerPage=60

[roo_ster]

Hokay, I guess not.

[AJ Dual]

Yeah, kind of a rare item. I use one earphone at work so I can hear if people are asking me questions, phone ringing etc. But on a PC you can adjust all the audio to one side.  Not so much on an MP3 player.