You should dump the PD and M43. 45acp and 40S&W are no good anymore. A 9mm does everything just as well or better than 40 or 45.
First the Firestar M43 IS chambered in 9mm. And I'll keep my M40 chambered in 40 S&W since it is one of the most accurate compact pistols I own.
Second I am not biased nor prejudice against any caliber. I like having choices. I EDC everything from 380 up to 45ACP and everything in between.
Third. I have actually used both 45ACP and 9mm in combat. When stuck with having to use ball ammunition, Ill stick with the 45.