I'm posting this question in the "Vintage" section because I'm seeing this mostly with older kits. I was looking through an old Gretsch catalog from the late 1960s and noticed a pre-configured kit with two rack toms that are identical (9x13) in size. I've also noticed Steve Maxwell demoing vintage kits on his YT channel with two 16x16 floor toms, although it's not clear whether these kits were originally sold that way or he configured them himself with add-on drums. I'm curious about this trend. Is there a specific reason for having two identical toms rather than toms slightly different in size? Clearly, two identical toms can be tuned differently but is there an advantage of this arrangement over having two toms that differ slightly in diameter and depth?