Hi! I am new to strength training, although I have been doing Cathe step dvds and spin classes for awhile. I would like to turn my focus towards more strength training, which set would you use? I like the structure and intensity of both sts and the new xtrain, but would one be better for someone who is relatively new to weight training? Should I consider another option as a better first step? Or maybe do one first, then the other? Thanks for any thoughts or advice you have.