Over the last 3 years I've had 2 PM9's. The first had the silver slide and was baught new. Had put about 400 rds through it before I sold it. Very shootable, very accurate and not one malfunction. Sold it only because I got a good deal on a used black slide PM9 which I still own. It had a reported 1200 to 1500 rds through it. I've put another 200 to 300 rds through it and it's still bank vault tight. I love that little gun. Easy to shoot, functions flawlessly and can keep a group smaller that a playing card at 10 yds. I could never achieve that with 2 different J-frames. I just couldn't shoot them for beans.
The ONLY thing I'd like to change is the sights. I'd prefer a 3 dot configuration. I haven't found a local gunsmith (okc area) that will do it and I don't want to ship it back to the factory. So, I just live with it.
Call Olyeller, Accurate Iron, he put sights on my P9. I ordered the novak night sights and they are awesome. Mike got them good and centered for me. He also stippled the grip and rounded off the slide lock, since factory is real sharp if you shoot it much.
The trigger takes some getting used too, but its like a smooth double action revolver or DAO pistol. Dry fire the crap out of it and you will learn to love it. Its not something you are going to shoot real fast but its a good trigger. My P9 is a tack driver if I do my part.