I received a 12 oz (or was it 16oz?) of Sonus MF wash for free with a purchase. I liked it and it did seem to wash my towels better than regular liquid detergent. When I used it up, I decided to buy Danase MF wash since I could buy it in bulk (a gallon) and therefore it was better value than the Sonus Brand. Once it is used up (still have a half gallon left) I will buy another gallon of it or will try a gallon of Charlie's Liquid MF Wash from Patrick at ExcelDetail or I my try Detailer's Pride's brand or Pinnacle's brand. Haven't decided yet. Which (if any) brands of Microfiber wash do you like?