You don't . You spend thousands of dollars buying each and every one to findThere are at least a dozen "main" luxury brands ($200+ razor) thrown around here, each with often a couple different offerings. Plus a few dozen medium/entry brands. I've been reading for hours, but how are they differentiated from each other?
In most other hobbies there are various stats or at least marketing jumbo you can point to. A tier list is usually opinion based but leads to discussion comparing items head to head.
As a newcomer to razors, but not collection hobbies, the information available isn't overwhelming so much as incomplete. Everything seems to talk about individual razors in a vacuum. Few comparisons to other razors. Subjective terms and opinions being given with not even abstract ratings, much less concrete data. Even the marketing materials don't seem to give much more than a few sentences that offer little specific to the model.
Short of buying everything, how do you choose what to go for?
out in the end there is not a whole lot of difference in many of them.