Mine both love to be brushed...I think it is from years of having to put up with it
I mainly use my boar bristle brush and they love it. I use a spray conditioner as well and that helps if there are any little knots. Treats are always a great way to keep them occupied and happy. I make brushing our "special" time too. I massage and rub and tickle and give kissies....I seriously think they look forward to brushing!
Keep up the good work...it will pay off in no time!