Hair Straightening Products

Hi, I'm a professional hair stylist and in the market for the best and healthiest method for hair straightening.  A coupld of people have mentioned Bionic Products.  From what I can see and read in the internet, I'm impressed.  I've also heard good things about the Chi System.  I would love some feedback from hair stylists who have experience with these methods or others, and most of all where I can get training.