i would say that for eyes i used the 239 and 222 and 217 the most. they are all fabulous brushes. and for the face i tend to always use a 129 and 109 brush.
This is suchhhh a hard question. lol. My everyday brushes are 239, 217, 224 for eyes. and for face: 187, 129, 150. they are definitely worth the investment!
187 and 190 are my absolute MUST HAVES!! I use my 187 for MSFs, blushes, cream blushes, sometimes bronzer when I only want a light dusting, etc. And 190 gives that perfect foundation application!
For the face, I love the 138 and the 116. I use these every single day, no matter what I'm doing. The 217, 219, and 239 are simply essential eye brushes.