Best mechanical Luger?
 

Looking for advice regarding a shooter, any manufacturer, any later date (after 1915?) known for excellent mechanicals. Would prefer numbers matching (not mag) and not reblued, but overall condition not as important as functionality. Thoughts? Thanks in advance.

Number matching, not reblued would be a collector item, not a shooter.

Consider a 1970s Mauser Parabellum
They are easy to find and affordable.
My own is a 6" version I picked up for $900.

You can find older P.08 shooters, but there is a lot of risk involved.

or a vopo or a WW2

But my shooter is a 1914 Erfurt...