Best so far!
I have Zumba 1 and 2 but this is by far the best.
Zumba 2 was an improvement on the 1st one, and I haven't used the 1st version since. Zumba Core is better however. You can select individual songs or short, medium lor long classes. Within each class length you can also select the type of music and it tells you the exact length of the class, so you can do the best you can in the time you have available.
It has the usual star system and gives bonus songs etc, as well as calories burnt. I doubt I'll be using Zumba 2 either now.