So whats the overall consensus on the Agents sets?

Personally I really like the look of most of the sets, but are these sets going to keep the kiddies interested? I'm looking at the getting some of the smaller sets for cousins for upcoming birthdays (and of course Christmas). They have Bionicles and exo force figures already, do you guys think these agent sets are in the same league or will they be a bit of a disappointment to 7-12 year olds?