As a P.O. Weapons Training instructor, I put 23,000 rounds +/- a few, through my issued Beretta 92FS, before turning it in when I retired. These were Federal ball, Federal H.P., Win. Silvertips, Win. subsonic, and Win. SXT LEO Only, plus some FBI issued Speer and Remington H.P.s. The locking block was just fine. I know other instructors did the same, and more, without a failure of weapon.
I also know a (now retired) armorer for a very large p.o. dept. who, over a period of years, put 70,000 rounds of factory ball and H.P. through a Beretta 92FS, without any malfunctions or locking block breakage. He was testing this pistol, and never cleaned it, other than to keep it lubricated.
I asked him about the locking blocks. Out of 10,000 pistols for the dept., there had been two locking block failures, in nine years.
Perhaps we just got lucky but I wouldn't hesitate to bet my life on a Beretta 92FS... and did for nine years.
(Besides, Glocks are so ugly, if they were a human being, they'd have to slip up on a glass of water just to get a drink!) Happy New Year to all!
FWIW. J.B.