I would most definitely get a Madan mustache comb from Jenny (mimimomo) and I also have the shiny grooming comb that she sells. Both are amazing. The Madan pin brushes are great, too. I have one, but I also use a variety of other brushes including a wooden pin brush. That's really gentle on the dog, but it won't remove heavy mats.
toplinepet.com #1 All Systems Wood Pin Massage Dog Brush