superfat cold process

Hellooo my fellow soap makers. I've read in a few threads that determining SF is totally up to you based on your preference. However I've also read that certain oils or butters pair well with lower/higher SF. I've also briefly seen SF associated with the term "lye discount".. would someone...

Hopefully this question has not been asked before. How many of you soap at zero 0% ? I do not make a lot of CP soap, because my family prefers MP. But recently I bought a rebatch grated soap, and loved the result I got. And it got me to thinking my soaps in the past smelled and felt too...