My new Simpson T2 synthetic, which is quickly relegating my Kent BK4 to second place. The inexpensive little T2 whips up terrific lather in nothing flat and lays on three passes with aplomb. Great little brush.
I'm breaking in a Trumpers IB Super Badger with horn handle. It's my first badger brush. It's a lot softer than the Proraso boar hair brush I had been using. I'm intending on using my badger brush with cremes and my boar brush with soaps. The Trumpers badger brush was fairly expensive. It's giving good results and it has a much softer feel on the face than the boar brush.