Ratdog,
What a run of bad luck you've had with some decent guns! I referring to the P95 and the PF9. I bought a KP95DC for my wife back in the 80s at Sports Unlimited for $279. It was the only pistol she could work the slide on easily, mainly due to the wide slide with the two decocking levers for a good grip. She shot it quite a bit, but the majority of it's use was for an IDPA loaner. It had thousands of my lead reloads and Blazer Aluminum ammo thru it. Gave it to my son about 5 yrs ago, he shoots the crap out of it with whatever ammo he can find. It's rarely cleaned. I am unaware of a single malfunction of that pistol. Which is more than I can say for some of my Glocks/Sigs/Kimbers/Colts/Springfields/CZs. I don't like the P95 for my personal use, but gotta give the devil his due. I also have a PF9, (2) P11s,(2) P3ATs and a P32. All have been good guns, had a pin walking problem with the oldest P3AT, KT fixed it and hard chromed the slide for my trouble. One of the first things I noticed when I got the PF9 was that when you inserted the magazine, it hit the mag catch and required a good effort to seat the magazine fully. It made sense to me to depress the mag release button at that point so the mag could clear the catch without boogering up the plastic part. This is not a gun that will get much use in courses of fire that require an on the clock reload. So,there is no reason to slam the mag home. I think most, maybe all, of the mag catch problems with the PF9 could be prevented with just a little push on the mag button when inserting a magazine.
Hope the P3AT works out for you. They absolutely require proper cleaning and lubrication, a proper grip, and good ammunition to function properly. Some,(like my first one) required a couple hundred rounds of break in before it wanted to run. Just something to think about.
Good luck,
Savage