Quote Originally Posted by chaim
Jeremy--so which should I be looking for in the lens, the fixed or changing aperture?
Oops, should have been more clear! I would go with a fixed aperture zoom before the variable aperture, a prime before the zoom, and if you don't need the telephoto then I would just stick with the 50mm until you have to pass over a lot of shots because you didn't have a longer lens.

I have been shooting 35mm film with a 35mm fixed lens for the past 3 months (just recently got back into 35mm) and have only passed up 3 shots that I can think of because I needed a longer lens.