Unless Cathe is producing a workout or workout series directed to beginners rather than advanced exercisers, I always buy the entire series during the first presale round, even if I don't see any immediate use for one or more of what's being produced. The discounts are too good to be true given the superior quality and production values, not to mention the potential health benefits, and I am kind of like a squirrel storing up nuts for the winter: I might not immediately need the nut, but the day can and usually does come when I crave the nut.
Many's the time that a Cathe workout has sat on my shelf for months, even years, and then I happen across it, dust it off, give it a spin and find something, or more frequently someTHINGS, that send me to the moon, and then that disc gets pulled to the top of the stack.
That's my take on it. I bought STS in the first pre-order round and am eagerly anticipating it, although at this time I do not plan on doing the entire production as organized by mesocycle. Again, the day may indeed come when a proper periodization program is just what I'm craving, and then I'll have my nut!
JMHO -
A-Jock