Of the four featured in the poll, I went with Wind & Wuthering, as I've grown fond of it over the years. In my younger days of being a prog fan, I would have been all over TLLDOB, due to my overwhelming love for longer albums and concepts, but as I've grown older, I've found its luster to wear off a bit for me, and the filler tends to stand out a bit more to me now than it did over a decade ago when I was getting into Genesis and prog in general.
A close second behind W&W was Foxtrot, with it's amazing bookend songs, and some great ones in between them, but something about W&W just speaks to me on many more levels now than the prog intensity that is Foxtrot, despite how great that album is.
-Marc.