OK=My picks:

Glock 26 (but all Glocks are much the same)
Browning Hi Power
S & W 39-2

Lugers jam too easily, esp with light bullets/loads (they have that 1/2 "jump from magazine to feed ramp/chamber)

C-96s are awkward and too big.

Exotic guns are too hard to get parts for (esp mags)