I use these:
http://www.brownells.com/aspx/NS/sto...le=SHOP+CLOTHS
The following are not cloths, exactly, but are amazingly useful and virtually lint-free. I use them more than just about any other gun cleaning supply, such that I wonder how I ever did without them:
http://www.brownells.com/aspx/NS/sto...+CLEANING+PADS
HTH.