I'm also a huge Benny fan. I've watched the rotations on JLTV and AntennaTV. Both have about 60 episodes in the package. They are mostly the same episodes, although JLTV has a few older ones not in the AntennaTV package. I've also rented/streamed the DVD packages available on Netflix. These are mostly older live (recorded on kinescope) episodes done at Television City.
I'd really like to see more of the live episodes, which are far superior IMHO to the filmed sitcom episodes. From what I've read, Jack really preferred radio and got into TV reluctantly. As already mentioned, he kept doing the weekly radio show (from Columbia Square) through the 54-55 season. He started doing filmed episodes so he could increase the number of TV shows each season by shooting some during the summer hiatus; but he continued to do live shows, too, interspersed with film throughout the 50s.
The earlier filmed shows were shot by George Burns' McCadden Productions and were one camera shoots. When Jack's capital gains deal with CBS ran out, his own production company started producing and he moved to Desilu, so he could do a three-camera shoot in front of a studio audience. When Jack's agent took control of Universal in the late 50s, he moved the show to Universal. These appear to be a mix of single and multi-camera shoots, using either canned laughter or shown to an audience for laughs. Playing without a studio audience basically took the life out of the show and by the 60s, it was just another sitcom. Also Jack got away from his long-time radio cast and format and started trying to be cool, with younger guests to draw younger viewers: Old wine in new skins. Unfortunately, these episodes are most of the AntennaTV package (distributed by Universal).
CBS cancelled Jack's show and he went back to NBC for one season. In the final broadcast from Columbia Square (by KNX Newsradio) they said some staff members swore Jack haunted the building upset about CBS cancelling him.