Well addictinggames does have a few good games, but I'm an AG man myself, I especially like the AP system and the fact that it has forums, though these could use some improvements
Addicting games sucks. There is no sense of community, all of their games are crappy dress-up games, there aren't any forums or anything else to join all of the users together, and it's horribly formatted.
Like Orion said, because we are here on AG of course a biased choice will be made in these "AG vs. X" threads.
So I suggest the next time these kind of threads are made, do not compare AG against other sites. We are here in AG, of course everyone will support AG!