Recommend portable music-CD storage

I have alot of CDs, and now that I have a CD player in my car, plus a portable player, I’m taking the CDs with me more often. But the cases are bulky and that kind of defeats the purpose of compact discs.
What do you people use to carry them around in quantity without getting them all scratched up? Can you recommend cases or thin sleeves – any suggestions welcome.
Thanks.

I use the CaseLogic ProSleeve system. It uses 2-sided sleeves with clear plastic pockets and cloth centers…disc on one side, liner notes on the other, and you can tear off the little edge thingys and feed 'em through the little space at the top. Handy for sorting and grouping.

Hey! This is my 500th Post! Yay for me…

Caveman, great idea! The Portable Prosleeve is just what I’m looking for.
Congrats on 500.