Are stainless steel razors meaningfully better than zinc-alloy ones?

Reviewers cite better long-term durability, tighter machining tolerances and heft as the main upsides of stainless models like the Mühle Rocca. However, multiple r/wicked_edge threads point out that a $10–$40 zinc-alloy razor with a good blade can produce shaves indistinguishable from a $100+ stainless one, the upgrade is mostly about feel and longevity, not closeness.