The material on this DVD set has some very strong items. It also has some incredibly weak items. That's OK though. They all can't be winners. The stuff that is strong is incredibly strong. X on DVD is the only way to be performing the invisible deck. If you use an invisible deck you should be performing this. It makes perfect sense.
Overall you can't go wrong with this series. If you are a fan of Sankey you will be a fan of this series.