Ln1,
Even though I do have the sub-compact 3", it is a bit bulky in some clothing situations to carry. On those occasions I wish I had your PM9. That will be my next toy. It's just expensive, and reminds me a lot of the much cheaper Kel-Tec.
Lately, I have been carrying my Smith & Wesson 642 airweight. I don't even know its there and the quality is incredible. No plastic to look at, and simple. I carry a speed loader with it just in case.