Summary: I my humble opinion the Nikon FM2 is the best 35mm SLR ever made. It's Leica quality! I've had mine since 1999. It has recorded my family members lives and deaths and our trips. Cast metal body. Ball bearings. You can snap on almost any Nikon lens ever made and it will still work.
Summary: Fully mechanical, 23 years with my FM2 and a 50mm f/1.8 lens and I still don't understand why anyone needs automation. Set you shutter speed, aim, focus, rotate the aperture then shoot - 5 seconds top. With a $200 Epson V600 film scanner I can do everything at home.
Summary: It is a serious, spectacular camera. It hearkens back to a time when Photographers had to know their stuff. It is 100% mechanical, which is why it's the preferred camera of certain National Geographic photographers. there are no electronic shutters to jam, or batteries to die in freezing weather.