It doesn't need to be super high resolution becuase that was why I bought a t2i.
You are too used to "d"! Film cameras resolution only depends on the film and lenses.
You can buy a low end camera like the EOS 300 and put there a 50mm F1.4 and a fine grain film and you'll get great results.
Any camera can handle dark and contrasty situations: it all depends on the film you use and lens.
And welcome to APUG!