My vote goes to Home & Second Home. I had not bought their 1983 album when I attended their show in Hannover, Germany, on the WCD or WWW tour. In fact, I distinctly remember hearing a song I did not know and thinking "huh, that must be Home By The Sea".
The only songs I knew from the album until then were Mama and That's All. While Mama has all the sweltering, ponderous heat of the big Genesis song treatment, its magic has worn off for me. I enjoy listening to it from time to time, but I don't feel the emotion in it anymore, I just remember feeling it.
That's All is a nice pop tune (and that's about all I could say against it).
The Oscar for the Song That Has Aged Worst Of All goes to Illegal Alien. Yeah, they were poking fun at something, and yeah, in the early 80s you could get away with jokes you couldn't get away with today (remember the film Soul Man? That came out in 1986, and it was successful at the box office, but its blackfacing was criticised and demonstrated against even then). I won't hold Illegal Alien against Genesis for its contents (they were okay at the time, they aren't not, and it's probably the same with Tom Sawyer) *), but for its annoying music. Yes, I do prefer Whodunnit to Illegal Alien because Whodunnit is over sooner.
Then there is the second side of the album. If we were still in the age of vinyl records, you would recognize it right away: It's the album side without any wear. That Danish prince would describe it as "Illegal Alien? Aye, there's the rub ... The rest oughta have been silence."
I am noticing a pattern in what I say in many of my posts in "Your favourite tracks on ..." polls: There are few songs I like, and many songs I don't particularly enjoy... Where does that leave me as a Genesis fan? Hmhhh... something to think about this weekend.