Sir, personally, im inclined to the thought that technology advances not regress overtime. Technology, moreso on CDPs, has gone a lot of refinement and add-ons. I believe that highend nowadays are far better from highend offerings a decade ago.
However, going vintage allows us to enjoy nostalgia for a certain era of radio. It has a certain bragging rights of owing a piece of history given its age. Another thing to consider is price. Vintage highend gears are priced nowadays even lower than entry-level stuff.
Again, personally I woudl go for new CDPs in lieu of high-end vintage gears. To have an assurance of reliability and warranty is something I would value.
Thanks
Paeng