I tried them a few years ago, I think they were pretty new to the market then (here in Oz anyway) and I was so looking forward to trying them but I didn't like them at all. Tried the shampoo, conditioner and styling cream but all they did was make my hair stringy and frizzier than usual (have since discovered that all creams make my hair frizzy though).
I used them a few years ago, as well. I was happy at first, but, eventually, they lost their initial appeal. I don't entirely recall why, but I think it had something to do with drooping curls. Also, the prices were rather steep. I purchased them from a ritzy salon, and I'm sure they jacked up the price.