So, just curious, what is your preference Glock, or Beretta? And why?

Neither, I prefer my big old Hogleg New Army,.44 Colt.

I have been Glock and Beretta armor's course. I shot the M9 in military competition. I have shot 1000s of rounds from each. Only failure in Glock was factory related. Had a locking block crack on an M9 during a completion. Since then and for other reasons I lean towards the Glock.

I prefer my Glock 30s over the Beretta M9. The M9 was a bit large for my hand. I even preferred the .38 that I first qualified with in the AF over the M9.
My son has a Beretta .22 LR that he constantly has feed problems with.
Everyone is different, so it's really a personal choice.