I think I have an idea for a nearly perfect carry gun. Take a Ruger LCR (or LCR-X, if you prefer an exposed hammer) in .327 Magnum and "Rhino-ize" it: make it fire from the 6 o'clock chamber, give the cylinder hexagonal flats, use the dead space between the low-mounted barrel and the front sight to mount a light/laser. And cut it for moon clips. There are .327 loads (the Gold Dot, for one) that can get 430+ ft-lbs out of an LCR; that's 9mm +P territory. The low bore axis would nearly eliminate muzzle flip, and, even with a light gun/powerful cartridge combination, would make for fast follow-up shots. It'd be small and lightweight and easy to carry. And it would be very reliable.