I use MINERAL BEAUTE myself and bought them from their website jcnadiaparis dot com
It's really worked for me and I think they are really good also very affordable compared to Sheer cover or Bare Escentuals.
Therefore I really recommend them! They've got some excellent quality Kabuki Brushes, Foundation Brushes seperately or then you can buy their 23 piece Professional Makeup Brushes set which is what I got in like a baby pink colour. It's beautiful!