I buy a lot of these comics for my daughter (single issue releases and a few of the collected paperbacks too).
It is fun reading them because they go out of their way to include lots of obscure references (as Tafk mentioned above).
She also likes them just because she loves Sonic so much even if she doesn't understand all the references, but it is fun when she finally realizes one and she'll get this look on her face and exclaim, "that's from Sonic Adventure", or something similar.