After doing the 10/12/16 for many years, now I prefer the 12 x 9 as my high tom ala Motown, and the 13 x 10 is just a badass size for the 2nd rack tom. It's deep and satisfying. I consider the 13 the ride tom size. I never thought about the 12 like that. I get loads of tuning spread between the 12 and 13 despite thinking the opposite of that for most of my playing life.