>>108039771/9
1/12 is too small and makes cloth look odd.
1/6 is way too big.
1/9 is a good compromise.
But that's for stop motion professionals working in a studio. If you're just some guy who wants to get into stop motion then 1/12 is definitely the way to go. Commercial 1/6th figures are almost always display pieces for collectors. 1/12 figures from SHF or AY offer way more poseability than any 1/6th scale figure.