I bought the hair brush, and I love it!! Just so you know though I have not tried the Mason brush. You would think that growing up with a mom that is a hair stylest I would be all over it, but I can't bring my self to spend that much for a brush! That being said I don't really have any thing to compair the Sonia brush to. It makes my hair smooth and shiney, and is comfortable to hold too. If you can find one I would buy it, and if you don't like it your only out about 20 bucks instead of 150!!=)