The real thing to consider is - do you go with FD or EOS film.
In the FD world, there are lots of good cameras for just a little money - but - you'll need the glass too.
In the EOS world... you're limited a bit. I've had two EOS5's (A2e's), and still have one, just to have it. They're ok, but compared to todays digital, are a very clunky and odd design.
The EOS3 is also very good... amazingly so. If you can find one in good shape, its not a bad "film camera" to have.
These days, all my film work is with Leica. I just love it. Wish the M9 was more affordable, and had a bit better sensor (but I can live with the sensor).