CD-R's losing quality with age????

[ancient]

Gets worse for me
A few year ago I bought a number of laser disks and cd videos - kept them mint - like an investment to sell on ebay and eil and the like
Comes to sell them now do a test play and approx half dont work without faults and picture / sound loss
as far as cds are concerned i reckon we have been conned : then the manufacturers complain when a few tightasses make illegal copies of what in a lot of cases is sub standard gear - still i digress
Just bought a samsung TS-H552U dual layer writer - starting to mke coasters again - anyone got a successful media and any one know of a software that specifically writes dual layer format
regards