What a Best-Seller Ranking Tells You, and What It Does Not

Sales position measures units, not suitability. A card near the top is usually there because it landed at a price a lot of people could justify, and because there was enough stock to sell, which are useful signals but not the same as being right for your machine.

Used properly, the ranking is a shortlist rather than an answer. It narrows the field to what is actually available and moving, and the checks below decide which of those belongs in your build.