Have to admit...I've done damned well with SIG, HK and the 3rd Generation S&W duty autos. Not talking personal opinion, or heard it at a gun shop BS. Talking tens of thousands of rds through guns carried in -45 to +105 temps. Carried by people who maintained them and others who did zero maint. From both a firearms instructors view and as an Armorer.
No comments on glock as my Agency never carried them.
As far as the external extractors which are the rage on 1911's now...A properly set up std extractor has never failed me. Then again I had access to a couple of great 1911 Armorers so a trip "back for repair" was drop it at the shop during Guard Drill, pick it up end of the day.
Another system thats been very reliable for me are the Browning Highpowers,speaking only the 9mm's. Not the .40's. I've owned several through the past forty years, ALL of them performed well. Still have a pair, one that I still carry from time to time.
Sorry for the Rambling...but I like guns.
FN in MT:cb