I think some blow dry brushes aren’t the best quality. I’ve found this to be true just testing a ++
My hair is naturally very thick, coarse & textured. I blow dry it about once a week and touch it +
I would just get hot tools
I love my T3, how long have you had it? They are under warranty for a good while+
Not sure about least damaging. I always use a heat protectant. T3 and Hot Tools are my favorite curl