Yeah, don't be too quick to dismiss poly pistols. You will miss out on many great options for easy carry pistols.
For carry poly is great. Tough and lightweight. A CCW pistol is a tool first and foremost. Leave your aesthetic preferences for your range guns, as its always nice to have a good looking and well made pistol, and at the range, size and weight are less of a concern.
Its nice when you can find a pistol that fits into your prefered carry style, and looks good to boot, but it might not always work out like that.
As was mentioned, as size and weight goes down, felt recoil goes up.
I prefer 9mm, but 380 has less recoil from the same size/weight pistol.
I don't recommend SA pistols, like the Sig 239, for new shooters when it comes to CCW, as they require more training and dedication to safety mindedness than other pistols.
If the M&P shield is available, it is a fine choice. There are other options in the thin single stack pistol category... Like the Ruger LC9... but if the striker version is not available, the heavy DAO trigger may be a turn off.
The Bersa thunder CC version is a good all metal pistol in 380, its bigger/heavier than many of the CCW focused single stack 9mm out right now, but it shoots pretty soft because of it, and isn't hard to conceal. You can get a double stack version but it adds a good bit of bulk.
The Glock 26 is a fine double stack 9mm that conceals well, there are other options in that size range as well... like the M&P compact.
The great thing about the sub compact double stack 9's is that they tend to be pretty good shooters, that will not have as much felt recoil as the single stacks.
As far as the thread is concerned... poking your head in and leaving a comment once a day goes a long way in keeping people engaged and wanting to help. Responding to questions asked and thanking for the help... it helps these things move along. Sometimes people feel like the thread has been abandoned by the OP when they take a long time to respond, and they feel less inclined to take the time to help if they think no one will see it.
I know how you can be a little long between your replies, from your other past threads, and most of us understand that not everyone has the time or desire to spend any long periods of time on gun forums. So don't worry over it too much, just let us know you are listening on occasion.