Opinions, opinions! All of them good, some even excellent (those who take the time to explain what they say).
Nikkormats. Get an EL or FT2 (the older FTNs are also good, but long in the tooth, buying batteries can be a problem, and no matter what some will say, the converters will not satisfy if reliable exposures are important to you) with a 28 or 35 AI or AIS, add a UV filter and an appropriate lens hood, load with film, and shoot away. For years and years. The cameras themselves are made from cast iron and held together with ocean liner rivets. Very little can go wrong with them. If the metering systems break down, the ELs work at a fixed 1/90 (who on earth would shoot at this speed?) but the entirely manual FT2s will just go on working as non-meter cameras.
The older Nikon lenses and accessories are still excellent value for little money. Old Canon lenses and other bits seems to me to be much more expensive, I have really never understood why this is. Maybe because when the Canons were new, they were the preferred shooters for the 'burbies, as all the Canon ads seemed to be aimed at the suburban market.
I am still using two ELs I bought new in the late 1970s and a pair of FT2s I bought in circa 2005 when old camera prices dropped below the basement floor. Ten years ago people would say "such old cameras!" but now they look and say "hey, fantastic!".