Comparisons

Compare before you buy

Six decisions that come up over and over. Each one opens with the answer — which option, for which buyer — and backs it with a table you can scan in ten seconds.

Last reviewed August 2026. We update a page when the underlying evidence changes, not on a schedule.

What we compare on

Only things that can be checked: what the manufacturer commits to in writing, what the optics allow, what the published research found, and what a difference in construction means in daily use. We do not score products out of ten — we have not tested them under conditions that would make a score mean anything, and a number we made up would be worth less to you than the reasoning.

Know which option you want already? See our picks for every kind of buyer.