Nearly all of the HP printers we have offer both PCL & PS drivers. Is
there any reason why I should use PS drivers? I've typically done that
just because my old predecessor did that, but it seems like every time we
run into some weird issue I'm able to fix it by switching to the PCL
driver. The only thing I was thinking could benefit from PS would be the
printing of PDFs but that doesn't seem to slow any when I use the PCL
driver so I'm really scratching my head as to why I should use PS at
all. Maybe for the two users I have using Photoshop? And PCL for
everyone else?

With great power comes great responsibility.