What is your No.1 brush type preference?

Now that I have learnt how to use properly to get the best lather, it is boar hands down for me. Size wise, I have a 26 cm Zenith that I love as this seems to be the sweet spot for me. I do really like a Yaqi silvertip I have (24 but seems bigger) and my synthetics, especially for creams but boar is the winner for me - with a preference for unbleached.

Even though I say I prefer my 3 boar brushes, I have just counted and realised I have somehow accumulated 11 brushes in total in quite a short space of time. And I am still considering getting a horse hair brush to complete the collection and then that will definitely be it.... well, a pause, for now at least....