Thanks for the links. It was interesting reading and I basically have always followed most of their guidelines. The only thing I question is storing discs horizontally for many years as they recommend not doing so. I have used many CD/DVD wallets that have stored discs horizontally for years (in some cases over 15 years) and my discs have suffered no ill effects. Other than that, I basically think they have good guidelines that I have followed and confirm that my discs play just fine stored via their recommendations.