I do not use a Slicker Brush anymore either. It does break the hairs very badly. I never knew why the ends of Stedman's hair always looked like they had "fly aways" - then I groomed him and got all the dead ends off - and changed brushes (I now use a regular brush, and a metal comb) and his hair looks wonderful, as does Tatum's. No more broken, damaged ends. I would personally only recommend a Slicker Brush for getting matts out - however, with my babies, spraying them with Buddy Splash before brushing (I NEVER brush a dry coat) takes any tangles out within seconds, although they honestly don't get that many to begin with which I guess I should be thankful for.
Of course, everyone has different opinions as to what they like to use on their babies, so to each their own