I am not able to download many live CD ISOs, due to a slow connection and firewall. I have found several sites that sell Linux CDs for just a few dollars, including live CDs. What sites would you recommend and not recommend for buying live CDs? I am reluctant to buy online at a business site that I know virtually nothing about. I am concerned about giving my credit card number away and the quality of the CD burning.

Thank you for your help.