Anyone tried the at home training programm Core Rhytms??

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I've been thinking about purchasing the Core Rhtyms DVD, I saw it on television and it looks like a lot of fun and a cool workout. I know I have the discipline to stick to a shedule and it looks lots of fun, but I haven't found any people yet who could give me some more indepth info. Buying this set is rather expensive so I want to know a little more from people who have experience using it. Core Rhytms is a dance work out based on latin dancing that is centered around the core. This is the area I want to train, I don't have a large waist but toning it and adding some muscles would be nice this would be an ideal work out to do so without doing endless crunches and sit ups. Any info or experiences are welcome!