I really need a subcompact .45... If I have to shoot someone wearing a plate, I want them to at least feel it long enough for the followup...
The XDs pistol that I have works pretty good. Only 5 or 6 rounds in the mag, but it is compact and easy to conceal. Probably more reliable than a sub compact 1911.
I finally got a holster for the S&W M&P 2.0 45. Not sub compact, but it is smaller and slimmer than a many other choices and shoots pretty good. I saw an ad for a Springfield XDm 3.8 that had all their newest features. I used to have one, but I didn't like it. The was too fat for me to get comfortable with the grip in a subcompact form.
Short of that, it seems to me that more 10mm options are coming out every year. I am trying to get the S&W M&P 10mm, but can't catch one in stock yet.