3rd, the battery of arms is a little different as you have to always release the slide lock, not rack the slide into battery.
Due to my awesome forum handle, I must profess the goodness of used Sig P6's, Sig P225's and P239's.
Reliability wise I do not know how reliable each gun is but they both have good makers so I would think they would both be good guns.
I had a pm 40 and still have a pps. The pm40 conceals a little better but I like shooting the pps a lot better. The pps is also a lot more accurate for me. You also should think about whether you like Dao or striker fired better
Oh, and can anyone tell me the difference between the Kahr CM9 and PM9? Besides the price?
And I shot my brother's Shield and it too shot good.My brother has a PPS and it is a nice pistol, I would have no problem carrying it, I like the shield better but probably because I have more trigger time with it. Incidentally, I carry my shield in a don Hume JIT holster for a Walther PPS, fits perfectly.