Well is this for carry or just range use?
I owned both a Glock 17 and Beretta 92fs, The Glock 17 was too big for my hand, slippery gen 3 grips. I liked the 92fs because it different.
I would only carry the 17 because the 92fs I hate the trigger bar, if you get it dirty/knock it out of wack = dead trigger. I took the grip plate off once and notice after hitting the pin I lost controll of the trigger, useless gun.
I really enjoyed shooting the 92fs at the range over the Glock 17, but for carry it would be Glock 17.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©