Not sure how I missed this thread being a prog fan.....but a good list though there are a few I would disagree with.
1970 ELP Lucky Man ...not Genesis Knife
1972 CTTE Yes ...not Tull TAAB
1973 Time -Floyd ...not Tull Passion Play
1974 KC Starless ...not Yes Relayer
1979 Comfortably Numb-the Wall -Floyd ....not Supertramp Logical song
1986 Red Rain Gabriel....not Genesis Land of Confusion
the later choices up to 2025 are all solid but a few I would change... like Dream Theater mentioned above...but we all have our favorites so,,,,,,
the next list is 20 lps that define the history of prog...scroll down...a good list.
btw Prog Rock Archives has a list for all the years ..put in a year and hit submit... and an all time list also for the last 50 years or so..... heres the link.....