I bought this for a friend a couple of weeks ago since I already own the first Zumba Fitness for Wii (Zumba 1) and I was totally hooked up the first time we played Zumba 2 - something that didn't really happen, when I played Zumba 1 for the first time. I know this is not a review of Zumba 1, but I have to mention a few facts in order to show how much they changed and improved. For example Zumba 1's graphic is not that great and the coreography is rather difficult. The music also gets a little annoying - it's too repetitive. The Tutorial of Zumba 1 is also complete crap. Zumba 2 is totally different! Seems they have REALLY learned from their mistakes. The graphic is much better (you can actually see the instructors do the steps now!) and they have not only used Latin American Music in Zumba 2 but also Pop Music from the Charts, which is pretty cool. The Tutorial in Zumba 2 now finally is just as it should already have been in Zumba 1: You start to learn a step slow and after you think you got it down, you increase the speed. After you feel like you got the step in actual speed it you can move on to the next step - everything by clicking buttons on your Wii mote.
The motion tracking is also way better than in Zumba 1! In Zumba 2, it recognizes whether you do the moves correct or not. And you definitely need to have the Wiimote on the right side of you hip, otherwise it gives you no credit even though you do the steps right.
Another pretty neat feature is that you can track your results and check how many calories you have burned (which you couldn't in Zumba 1). And you can enter your weight to track that as well. However - the number of calories it counts seems to be a little too high. I will need to check that on my pulse monitor, but I am pretty sure that I do not burn over 500 calories per hour.
However: Summed up I have to say this is now my No. 1 favorite Wii sports game so far! I just ordered it for myself and can't wait for it to arrive! :)
Definitely recommend buying it. Especially when you were disappointed by Zumba 1: Zumba 1 is actually more fun after you have learned the steps with Zumba 2!