I find DSOTM a classic album that changed a lot but it is not something I would listen too much, I think WYWH is a more complete album, as is the wall.
I enjoy listening to PG era Genesis, but to me it is the group that would become the PC era Genesis which is what Genesis is in my head from Trick of the Tail down. I think PG leaving Genesis was the best thing that happened to music, I think it produced a better Genesis and a better Peter Gabriel.
Rush, anything before Hold Your Fire are fantastic albums that I can listen to any time, and on any different day I would pick a different album as a favourite, even down to the first 2. from hold your fire on I never really got into it, and although I had friends that said 'oh you should listen to the new album, its like they used to be', it never was fro me.