I have seen most of the Charley Chan movies, a couple of the Mr. Moto ones but not a single one of Mr. Wong.
I always thought that Charlie Chan was pretty good. Just about the right amount of humor, usually supplied by his number one Son and his constant girl chasing.
I loved the No. 1 son. In one generation, he was TOTALLY Americanized - always starting off with, "Aw gee, pop . . ."