I like boar bristle + nylon bristle on a large barrel brush for a straight or very loose blowout.
I like nylon bristle + metal/ceramic barrel brush for curling some hair types.
I like plain boar bristle in a medium to small brush for sticking the hair to like velcro and rolling up and down with no tension for a super curly blow dry.
You should check out our brushes! The G Series is our most popular line amongst the YS Park brand.