Pentax 67
The Pentax 67 is a medium format camera that looks (and shoots) like a standard 35mm.
It is big! It is heavy! The shutter has a massive SLAP that you have to brace for. And its shutter sound is like music to a film photographer’s ear.
Interesting fact - it is the last model of film camera that Diane Arbus used. To be able to afford the camera she ran masterclasses in her Westbeth apartment.