If you don’t want to spend the money on a Vault, their are plenty of DIY solutions that will accomplish the same thing. Currently I am RIPing my CDs on my computer, then storing my collection on a networked 2T external drive (I’m at about 150 GB, 50+ FLAC redbook CDs). I do occasional manual backups on a spare 500GB drive, which works fine for now. Use Airplay to send stream to Apple TV or Airport Express (Mac user, you can do the same stuff with PCs). AEX>DAC>output to stereo. You can go AEX>stereo too, but a better DAC may be a good idea, depending on your system.
It’s hard to figure out why anyone would want a dedicated CD player when these options are available. The only thing I can think of is that the physical act of selecting a CD, manually inserting it and looking at the printed material as you listen is essential to your experience. If that’s the case, then I would still buy a Vault instead of a new CD player, and just pretend it is a CD player.