I have all of Cathe'd DVDs (except for the really old stuff) but I have to say that this is the one I use least. When I want an "express" workout, I tend to reach for the CTX Series. While I love the Body Blast series, I seem to go for the premixes (which are awesome) rather than Timesaver. I believe The Timesaver is a great way to test out Cathe's style and intensity if you are new, but if you already have the Body Blast series, it's kind of redundant. (I'm sure others will disagree, however).
Shelbygirl