Man, that is such a difficult choice to make. My favourite album is The Wall, with Goodby Blue Sky probably as my favourite track and Run Like Hell as a power song runner-up. Google Play Music however tells me that I listen to Dogs most, followed by Summer '68. But I also really like Great Gig in the Sky, Keep Talking and Time. And the Pulse-version of Sorrow is just amaaazing.
Concluding, is 'most of them' a good answer?