What's the verdict on Skylanders?

So the young ones; 10 and 4 years old, have been asking for the Skylanders for a while now. I figured that since Skylanders Giants is coming out that I'll finally get it for them for either Christmas or an early present. They enjoy those types of games, more recently the Disney Universe game.

Not sure if I'll get it on the Xbox 360 or Wii U since I have a Premium on preorder.

Anyone who's played it or has children who play it, how is it?