Sorry, guys, but I'm strictly a Jack Benny gal.

He was the
king of the radio sitcom for decades! And most of his commecials were cleverly worked right into the show: there's one opening commercial as the band's playing, one commercial during the actual show itself, usually worked into a skit or some dialogue, and then one commercial as the show is ending, again with the band playing. And the ones while he was on with Jello come with Jello recipes!
But I have listened to Our Miss Brooks, and I'm fond of Fibber McGee and Molly. I got my collections from OTRCat.com. Very cheap, and the most extensive collections I'd found.