What is the best foundation, for tone, skin and spot cover up?

I want to find the perfect foundation.What is the best foundation, for tone, skin and spot cover up?
This might sound like a weird answer...but the best foundation I have ever found was through seeing a rep from mary kay. There foundation matches perfect. The lady or guy sometimes has every shade under the sun and it is way less expensive than Macy's but better than a drug store. Once I went through mary kay I never went back. Even there cleanser is fantastic, there is nothing else I can wash my face with. I have tried Avenno for sensitive skin (made me break out), I could find nothing and tried everything. Mary Kay was the only thing my skin liked. Nice thing about Mary Kay is there foundation is light weight so you don't feel smothered by your makeup. I had a mary kay lady come to my home and did my makeup for my wedding...if I can trust them on that day than I can trust there make up any day.