I practiced Pilates with a stellar instructor for seven or eight years until the studio had to close recently. I turned to Karen Voight as a replacement instructor, at least for the moment, because her technique is excellent and her cuing is spot on. I have several of her DVDs, and they're all good. She's very consistent.I will say, however, that these DVDs are not a replacement for actual studio work. Karen is good, but she doesn't communicate everything you need to know for proper form -- she can't in the limited space on a disc and she can't observe you and your movements. Pilates is very precise, and bad habits can develop quickly. Performed correctly, Pilates is unlike any other method for strength and toning, but you can't get it all on a DVD. These discs are great if you want to see what Pilates is about and then use them in conjunction with studio work or if you're an experienced practitioner and know how to fill in the blanks. Experienced people will want to drop in for a tune-up at a studio periodically.A note on this one. The disc I received, although correctly labeled for the workout on the cover, actually contains two workouts. The Pilates Core Power workout is on there, but it's not mentioned anywhere in the packaging. I mention it because I already owned the Core Power workout on a separate disc. I don't know if all the discs in this packaging are like that. Turns out, it's the same exact disc that was sold under the name Total Body Pilates, but it's labeled Total Body Training. So, if you already have Total Body Pilates, you don't need Total Body Training, and you might not need Pilates Core Power.