I bought an ex-VA Beach Sheriff's Dept. Glock 19 from Summit Gun Broker last year. After a little tuning (parts upgrades, 3.5# connector and "$0.25 trigger job"), I've been exceptionally happy with it. I've NEVER had a misfire or misfeed with it. It's also extremely accurate at typical gunfight distances.
I wouldn't hesitate to recommend a Glock 19.