I always keep two different shampoos and conditioners in my shower so I can change it up every once in a while and not worry about build up. Right now I have Brilliant Brunette and Aussie's Smooth shampoo and Revitalizing conditioner. I also LOVE Redken though. I just love trying new shampoos, and when I have the money am MORE than willing to spend a little more on the good ones. I figure, my hair can either make me feel awkward and worried about my appearance all day or leave me feeling great about myself...it's worth it to me to by the expensive stuff!