It’s a tall order to find a truly reliable pcc that is non-restricted AND takes Glock mags. Most of them I would class as “range toys” and would not stand up to adverse conditions and a heavy fire schedule. Essentially, my definition of “reliable” is whether or not I’d trust my life to it. Maybe that’s extreme for some, but to each their own.
I’d second the recommendation of the APC9. It is an outstanding firearm. It’s expensive and I don’t know if the version with the Glock lower has made it to Canada. You’d also need to get someone to make you a non-res barrel. The GHM9 is also an interesting option, available with a Glock compatible lower, although it might not be aesthetically pleasing with a non-res barrel.
If Glock mags were removed from the equation, I’d recommend the Scorpion EVO hands down. It is an extremely simple and robust carbine, designed for military service. It’s lightweight, has tons of parts and aftermarket options AND it’s relatively cheap.
Have not tried the 9mm Tavor, but presumably it too would be a good choice.
Were it not for the 5 round mag limit I would own one. Same with the SIG MPX.