How big do you plan to print? If you're limited to printing 11x14 and smaller, I doubt you're going to see any difference between the two lenses unless one is a real dog and all hazed up. I have several examples of 50 mm enlarging lenses, and even the most lowly of them, a 50 mm f/4 El-Nikkor, produce very good to excellent results when you keep the maximum print size modest.