The price performance ratio is perfect here, for this high volume. I had all the time the BC series of Schwarzkopf, but I noticed that my hair needs something else. Property me then after a long search, chose Wella. I am very satisfied, it smells very good and makes supple hair. I use the spa once a week and am thrilled. Although it is stated that it is for fine hair but I have ordered it in spite of everything, I have thick curly hair is very often smoothed, but you effect of shampoo and spa are great.