I know this issue is resolved, but to all new users there is a lot of information about scratches on the reading surface, but the real problem is the top surface. It is the one most in danger. Unlike pressed Discs the information is stored near the Top surface hence the warnings about how you write your titles on them.
Keep your Discs in a proper manner and they will last longer than the system you are using. As time goes by if your information is important to you, you would be wise to transfer it to the new format. What will that be, who knows maybe we will spin discs as in the original film Time Machine.