PM is definitely a gold standard program. I liked William Hopper aka Paul Drake.
Burr did some radio drama, Fort Laramie. It’s rather good.
I’ve got a few Mannix DVDs around, maybe they’ll get some play this weekend.
Re: Perry Mason - my dad was a prosecutor. We always watched Perry Mason when I was a child and it confused me, because PM was the good guy and the prosecutor always had egg on his face at the end. I asked my mom one time if my dad lost all his cases.