rs3m bc

On many lists of mains i have seen on this Forum that had the RS3M V5 BC (UV) as Main 3x3, the YS3M BC (UV) Was the Main 3x3 for OH. As i have both of them, and i dont like the YS3M for OH, i wanted to ask: Why do yall main the YS3M over the V5 for OH, and on which settings do yall have both of...