Any gun that fires caseless ammo that runs 5 cents a round.
The Remingtion Nylon 66 back.
Colt 9MM Pocket. Are you listening, General?
A Hi Power cut down to CCW size, polymer ok.
Glock .380.
Glock anything single stack with less than 1" slide thickness.
As hinted before, a PSP/P7 - at decent pricing, like $400.
A Keltec that actually looked good. Maybe in 50 years we'll see it differently.
A Ruger LCP in stock at the gun store, and since I'm asking for the impossible now, I want last shot slide holdback, stainless or titanium components if not poly, and a lifetime warranty against rust. Three magazines, a pocket holster, a really secure pistol case that can be locked into the car, and NO banner on the slide. Finger notches on the butt to extract a fouled magazine, a magazine extension for grip, and the takedown pin redesigned for easier use. Factory tritium sights to find the thing in the dark, too, and an integral Crimson Trace laser with a cheap, easy to find battery, but 50,000 hour life, that turns on with trigger preload.
Not that I'm picky or anything.