I don't own any of these but seek them all out on location. I love all three. I listened to the Shadow as a radio drama as a kid and loved it. That said, the movie bothers me.
BSD I straight love. Same for the Congo.
I'm torn here. Great question put forth by OP.
I think I go with Congo. This might be due to the fact that when I play it, it means I'be driven 900 miles to Vancouver to do it!