Tigi and Paul Mitchell for me. I have used a variety of tigi products for years and when I ran out over xmas I stupidly bought some from avon, omg i hated it, made me really appreciate what I had before and you have to use loads of the damn stuff to wash your hair whereas paul mitchell or tigi shampoo and conditioner lasts me between 6 - 9 months if i hadn't binned the avon stuff id of used it up within a month !!!