Is this supposed to be a "close range defensive handgun" for carry or for around the house?
It seems you're a bit stuck on 9mm. Why not a 38/357 revolver? Seems like that might be a good bit easier to reload.
The Luger would be cool but probably a lousy carry gun. (I can't think of anyone carrying one since The Man From U.N.C.L.E. went off the air.) Given the choices you've presented I'd go with the revolver.

fiery, dependable, occasionally transcendent