Underrated: Shoot Me Down, man, I don't understand why it was selected as the last position on the GGDAG Collection 1... And I'm not saying that this song is one of the best they have produced or something like that, but, saying that it is the worst song of that album isn't comprehensible to me. Voyage is a honorable mention.
Overrated: Souvenir, I have never liked how it sounds but I see that many people find this song enjoyable, probably isn't just for me... but this is a honorable mention. The real overrated song is L'Amour Toujours, and I really like this song, specially in mixes like L'Amour Vision or Forte Forte, but, come on Gigi, there are like thirty versions (or more?) of this song, please, stop overexploit it, sometimes it feels like you're stuck on the same song.