I recently got my Vacuum State moded Sony SCD-1 out of storage and back into my system. I have to say it is a pleasant surprise after all these years. I am also enjoying the slower pace of selecting a disc and playing it on the SCD-1. A nice change of pace from the sometimes faster paced streaming I do via TIDAL and Qobuz.
The DAC on this player is 20 years old so I am thinking it is the Vaccum State V5+ mods I did 15 years ago is what is making this player still sound great. My current DAC is the Benchmark DAC3B a neutral and extremely revealing unit. It is a much different sound than the SCD-1's internal DAC, but I love both.
I sometimes see this player on sale for under $1000. Though I would not use the original packaging to get it shipped to you. The packing foam will be useless at this point. It weighs about 50lbs.
BTW - Dark Side of the Moon on SACD on the SCD-1 is the best sounding disk and music on any format that I have heard.