Lugers are nice shooters and served in 2 world wars and were issued by more than a few countries. Ive yet to see a Russian capture close enuff to examine- I suspect they were broke down, cleaned up and reassembled with mix-master parts... which is sad. A good shooter would be nice to have- back in the day -1960s- a Luger was one of the few 9mms available to most- Walther P-38, BHPs, both very expensive and a S&W 39, also pricey. That all changed when more varieties were called for and provided.
Those I have used shot pretty good, minute of coffee-can- but were ammo sensitive and preferred hotter ammo than available in USA at the time. Fun for poppin rabbits even with the rudimentary sights. I did know some guys who preferred the Parabellum 9mm but that was their personal idiosyncracy. Personally Ive only fired the military 4" barreled P08s.
The comment above about magazines is right on, in my experience, it can get frustrating as well as pricey. Cool shooter, look neat.. look better with ivory grips (one of my goals in life was to get an ivory-gripped P08). Best wishes which ever way you decide to go... Dun