Correction, YOUR PPK has a horrible trigger. My wife bought herself a PPK/S, I was pleasantly surprised at how good it was.The PPK is a terrible pistol. It has a horrid trigger.
To the original point: You might wish to examine the "compact" range from the various makers. Small enough to be controllable, yet large enough to be a decent range gun.
CZ 75 compact or something of that nature.
Glocks- grips, love em or hate em. No middle ground.
You might do well to look at the S&W M&P series or any others that feature an interchangeable back strap.
Spend some quality time at a gun shop with a large inventory and see what you like. Take your time, get it right.
Stay away from the itty bitty guns unless you get to shoot it first. Typically they are unpleasant to shoot.