My nine year old nephew is really into Bakugan. I know nothing about it so had no idea where to start when looking for a Bakugan present for him.
I went for this one and it was a good choice. All the Bakugan work (ie they open up when you roll them over the supplied metal cards), there's a variety of Bakugan - different shapes and colours, and the carry case they come in keeps the pieces safe and portable.
My nephew was really pleased and played with them all day.
The only small criticisms I have are that the carry case is a little flimsy, and also, after a few days, one of the bakugan seemed to fall apart, so seemed like maybe this was cheap quality, but it only took about a minute to put the bakugan back together and hasn't broken since.
I'd recommend this product for a child that is starting off on the bakugan journey. It's perhaps not for those that are looking for the 'professional' and more 'sophisticated' end of the bakugan toy range.