The number of rounds has absolutely no impact on my EDC choice. I carry a PCR because the no safety/decocker action makes me feel safer, and because it works so well for me that it makes me a better shooter.
If it came in a single stack, I might prefer that, and sacrifice rounds.
The PCR is 14+1, and I bring a spare mag for all semis I carry, or two speed loaders for revolvers.