Two quality guns, it's a coin toss, depends on if the user is accustomed to single or double action guns. I carry a PM9 , only because of the pocket carry aspect. I like a longer revolver type trigger on a pocket gun, but am looking at sigs again now, along with sub compact 1911's. As long as the gun goes bang every time. The glocks I feel the need for a holster, not just a remora pocket holster , but one with a more positive hold inside the waistband. It's difficult to go back to larger guns when you get used to pocket carry.
I never would have envisioned it 40+ yrs ago when guns were just too large to do this, " other than a snub nose inside the waistband, or a belly band, but now, "for self defense" it is just so much easier to blend in, and still have a formidable weapon.