In digital the camera bodies have different sensors and processors, so the camera itself will determine picture quality (along with lens of course). With film bodies, the film and lens determine the quality, so a good film will give you the exact same quality whether it is in an entry level Rebel or a top professional 1V or 1N. So in terms of quality, you cannot go wrong.
One of your main considerations will be do you want a large and heavy body (more robust) or a small and light body. I am tall and have large hands, so I actually prefer the feel of a larger body. That is one reason I never upgraded my (film) Elan2e to an Elan 7 series, because they made the bodies smaller. Eventually I bought a used 1 because everyone was going digital and I got it cheap and then I upgraded it to a 1N that someone actually gave me for free. If you like a robust camera, 1N or 3 is the way to go (the 3 has eye control focus). If you want something lightweight, Elan2 or Elan2e (latter has eye control) if you want a bigger feeling body or Elan 7N or 7Ne (latter has eye control) if you want a smaller feeling body.