I enjoy the B3k after my Ultra Fuzz, but after much tinkering I hav decided I prefer the sound of it going into the fuzz, just takes it to another level, so much gain! And the B3K works great before the tafm as the two volume control let you balance the overdriven tone and fuzz
Havnt tried a tall font muff but I imagine it will be the same experience I have with the ultra fuzz when putting the B3K before it, but whatever sounds good dude!