I have no experience with any of the Walthers.
I do have a PM9 and a P45. Had each around 6-7 years.
More recently, I bought a PM45 thinking it would be the best of both worlds. It wasn't...for me, anyway. Guy I sold it to loves it.
If I were to do it today, I'd probably opt for the CM9--it is 90% of the gun at about 60% of the price. You can also shoot lead reloads out of a CM9 due to it's conventionally rifled barrel. The only thing it gives up is the dovetail for the front sight (limits aftermarket sights), but a good machinist could solve that very quickly.
Last edited by orionengnr; November 23, 2012 at 05:12 PM.