To be honest the 2 Lugers I have owned/shot both jammed quite a bit. So I would be a bit uneasy about trusting my life to a Luger.
If I did, the only mags I would use are the fxo ones, they seems to work a lot better than any of the others I have tried. And they are too expensive to keep fully loaded around the house.
I got an M4, and I'm sticking with that until I get a Glock 17.... YES that's the 9mm model