As usual "best" is very subjective. Most weenies want the sharpest, most contrasty, fastest lens they can get so they can take photos of their Corvettes using TechPan film stand-developed with Rodinal diluted 1:10,000 for the best acutance. Personally I like the older ones like the 50 mm f/2 Nikkor-H (AI) because of it's moderate contrast because that's what I want in my B&W work.