Gunsmoke and Twilight Zone are superior at a half hour. Naked City was superior at an hour. Can't judge Hitchcock since I've not had a chance to watch many of the hour long shows but the half hour shows have always been terrific.
Fascinating artifact! I saw John Cunningham just two months ago at Lincoln Center reprising his role as Captain Smith from the original Broadway cast of "Titanic" (also written by Peter Stone) in a special one-time performance with much of the rest of the original cast returning as well.