I've caught several smallmouth in the 5 lb class. A lot of them on Dale Hollow. 21 inches is the size limit, so I've not weighed many of them. I have caught a few in the low 6's.
As far as Largemouth go, my best was caught on a private lake in Alabama, it weighed around 10, and was released. Over time, I have caught several in the 7 pound category and a couple just over 8. 16 lbs is outstanding. I've only seen 1 bigger, and that was Woody's bass.
Skipper