TOP 20 Genesis Songs. Results

Agree with you on ATTWT, I think it's a strong album, just not quite as strong as their previous 7 albums in my view. It sometimes gets a bad rap because it was a turning point towards more mainstream pop-rock, but it was still innovative in many ways and, despite the departure of Steve Hackett, it retained much of the essence of the Genesis sound while adapting it to more traditional song structures. Actually, it was Genesis's most immediately successful album commercially up to that time, but of course this was in large part due to Follow You, Follow Me.     

As for Ripples, I think its melodies, and particularly its chorus, appeal to the ears of a wide audience, beyond prog circles, so its allure really depends on how relevant melody is for you in how you listen to music, and how susceptible you are to this melody in particular. The accompanying gentle and dreamy guitar arpeggios  contribute nicely to the main melody sung with emotion by Phil Collins, making the whole particularly atmospheric and evocative (for many people at least). Meanwhile, the classically-driven keyboard instrumental, together with Hackett's weeping guitar notes, is very well woven within the song, making the track innovative enough to also appeal to prog fans, albeit it is not one of Genesis' most innovative songs overall. Together with The Cinema Show and Carpet Crawlers, I think Ripples is one of the songs from Genesis' repertoire that best manages to marry prog and pop sensibilities.             

I like the 1999 version of Carpet Crawlers the most. 

Now I go hide... 

It's not a best to worst list. All these songs won short rounds of people posting their favorite songs.