Home Distiller

Whats going on yall, I just wanted to show off my latest toy. I have been playing around with making neutrals here lately and was reading about how grey goose carbon filters their vodka. I did some reading and found where carbon filtering can polish an otherwise good spirit. I know and understand that you cant just run some rot gut cheep stuff through some carbon and out comes high end stuff. I have also read around here where people say you don't need a carbon filter just run it a few times through your still and your good. I just seem to think that carbon filtering has to add something, otherwise the big guys wouldn't use it. My process is to pot still a couple neutral washes, run that with water topped up and under 40% and use my VM with 2' of raschig rings and 2' copper mesh in my stainless still.
Then cut that down to 50% or 100 proof and run it through activated carbon for a nice polish. What do yall think about this?