Thanks so much for all of your responses. I've pretty much decided that I will be purchasing at least the 20mm gold pin brush. I'm debating the face/feet comb as well.
Our groomer recommended a soft slicker brush for dematting (they were matted around the legs at thier first grooming) so we bought one at Petco. I just don't like brushing them daily with the slicker as it seems so harsh.
Thanks again! I'll be sure to come back and update when I receive my brush.