I disagree if you are familiar (in person) with some of the speakers being compared.
I would not purchase speakers solely on a YT video, but do find some of the videos to be helpful.
The last speakers I auditioned sounded better @ the dealer VS the 3 decent YT videos I listened to, but I found that I did not care for the way they looked up front and close.
I live in Los Angles so auditioning (aside from Covid) is not a big problem.
DeKay