Klaus, would you grab a Reissue one to record just as quickly as a Vintage one? or if still given the choice, go for a well maintained vintage one?
Given the audible differences in capsule sounds, I would grab the better sounding one: Neumann specifies ± 2dB for this mic over the entire frequency range, which means there may be as much as 4 dB off from one to the next fet47 at any frequency point, which is audible and character-defining. Almost all of the mic's response spread or tolerance is due to the hand-made capsule.
The verdict is much more iffy if you asked me which one will retain its value over the long run. From experience with the U67 reissue, it could end up that both- vintage and reissue- will appreciate equally in value over time, especially if the reissue will be limited in numbers (notice: I use "appreciate" rather than "retain").