Exactly. I own a PT945 and have asked the same question. I own many other brands and types, but my PT945 has simply been one of the best & most reliable guns I have ever owned. Maybe as said above, just over-shadowed by double stack designs. I think the PT945 is an underrated gun. Sometimes I read someone say they would like to have a .45ACP with manual safety, de-cocker, firing pin block, light weight, 4.25" barrel, double/single action, easy take down, accurate & reliable. I just smile and think....hey I already own one of those.
Did I mention I have put every kind of ammo through my PT945. Everything from Wolf, Silver Bear, PMC, American Eagle, WWB, to more expensive Speer, Federal, +p, non +p, etc. Just shoots it all with no complaints.