Lien-Schlossberg book, Hayden:The RSI - any opinion?

Hi,
There are these two books Kathy Lien-Boris Schlossberg: High Probability Trading Setups for the Currency Market and J.Hayden: The Complete RSI Book. I am thinking about buying them but i could not find any (correct) reviews on them. Does anyone purchased and read any of them? If yes, could you please share your opinions with me. Thank you for your help in advance, xrbor.

The only indicator I use is RSI and I use Hayden's method of using it. I combine it with Pitchforks and Fibs. It works for me.