This DVD was my introduction to Pilates. I started with the "partially modified" level (medium difficulty) and after the first few times I was getting pretty good at the moves. Soon I noticed feeling more toned in areas, particularly in what they call the "core", such as my lower back and abs.
However, after a few months I was ready to try the advanced level and was disappointed to discover that, unlike the two lower levels, it's not possible to view just the woman doing the advanced moves on the screen - you have to have all three women on the screen, one doing the advanced, one the partially modified, and one the fully modified. It requires too much patience to hear the instructions for all three levels when I already know what I'm doing. So I am ready to try my next DVD, one that moves along at a faster pace.
In conclusion, I do not think you will be disappointed with this DVD, but you may find yourself outgrowing it. I suppose if you have some friends who have also expressed interest in pilates, you can pass it along to them when you're ready to move on.