Brake dust ?? Thank god its almost a thing of the past... I replaced my front pads about 3 weeks ago with the Porterfield's and dust is no longer a problem..The rear were never an issue but those stock front pads had to go..I received a questionaire from DC asking me what I liked or would like to change on my Xfire..My biggest complaint to them was the excessive dust..I listed some other minor things but love mine regardless. Not sure about the "Greenstuff or Rotex" but I cannot be more pleased with the Porterfield Pads...I suppose any of these 3 brands would perform well.. Its nice to drive around every day knowing you don't have to spend 30 to 45 minutes cleaning off dust..