I think you nailed it. It's just as easy to conceal an XD subcompact and pack 14 rounds. If DA is something sought, I'd pick one of your options or maybe the CZ RAMI or HK P30sk
Only a bit fatter and almost double the rounds
I agree, I had specified the Sigs for singlestacks, which I do not prefer. Glock 26 is my "small" ccw. Mostly I prefer a P229, or Glock 26/17 depending on what I'm shooting.
I don't find any singlestack 9s sufficiently easier to carry to justify them over a similarily sized double.