I have read the threads about storage.
The jist is that when a wallet or sleeve with a plastic window is used, there is some chemical damage to the optical disc that degrades it.
But I have noticed that there are paper sleeves with no window and there are, (at least on eBay), Tyvek sleeves with no window.
So has anyone tried quality testing on windowless sleeves of paper or Tyvek for long term storage ???
When you have many many discs, jewel cases (even half thickness) can really take up a lot of room and add up to a lot of weight.