I know some will think my statement is sacrilege and I'll get some flaming for it, but this has been my experience.
I have 14 brushes in rotation. Ten are Silvertip Badger, three are synthetic, and one is Best Badger. Of the three synthetic, one is a Razorock Plisoft, one is a synthetic from Maggart's, and one is a vintage nylon Made Rite. All three synthetics drop lather when applying it to my face, while none of the badgers ever do this. Synthetics just can't hold on to lather when fully loaded.
This morning's shave was the last straw. I'm going to drill out the three synthetic brushes and replace them all with badger.
I have 14 brushes in rotation. Ten are Silvertip Badger, three are synthetic, and one is Best Badger. Of the three synthetic, one is a Razorock Plisoft, one is a synthetic from Maggart's, and one is a vintage nylon Made Rite. All three synthetics drop lather when applying it to my face, while none of the badgers ever do this. Synthetics just can't hold on to lather when fully loaded.
This morning's shave was the last straw. I'm going to drill out the three synthetic brushes and replace them all with badger.