Remux 4K on the NAS. Discs only if I can't find what I'm looking for with other means. Then rip and shelve until someone I know wants them.

Reminds me of back in the day when cd's went to mp3. I had spindles of retail cd's that I couldn't fit into binders. Ripped everything to flac and gave away the cd's.

Everything is digital/streaming now.

I agree with this but if you want the same quality as the original, encode it in opus @ 192. You won’t be able to tell the difference from the original. I encoded my music collection that I keep on my backup shtf drive. 90gb of lossless files down to 19gb.