Currently I have Leaner Legs & CTX Upper Body on video, but I have been seriously contemplating buying the whole series. However, I'm not sure if I should just buy the 5 other videos, or the whole set in videos it is cheaper that way, or the DVDs. Can someone please tell me how the DVDs are chaptered? If I mainly wanted to use the cardio portions would it even matter if I bought the videos instead? If there is so much more available option wise then I would probably buy the DVD. I figure if I bought the DVD then I could go to the Ya Ya swap and sell my Leaner Legs & CTX Upper Body or maybe exchange them at videofitness. Any information you can give me would be very much appreciated? This buy will be one of my Christmas presents.