I am still learning to sharpen my knives at the moment. I have a bit of experience, but I had some super cheap stones in the past and I felt bad about my work.

It has become something I wanted to learn how to do properly now. I bought myself a good kit with a 220g, 1000g, and 4000g stone.

I have gotten my Shun Santoku to a pretty good edge, and I have a MAC knife on the way.

My question is, where should I stop in terms of finishing stone? I have heard it said that you can actually go too far in some cases. My knives for work are also stainless steel although I will (eventually) get a really nice carbon steel for home.

Tldr: is it worth going to 6000 or 8000 grit on a shun santoku or a MAC professional? Or would there be no difference past 4000?

Thanks for any help!