If someone came up to you said, "You can only listen to one of these options for the rest of your life, you must pick one," which are you taking?
Basically, you get to take two decades, but these are the only options:
Option 1:
70's Yes - Time and a Word, The Yes Album, Fragile, Close to the Edge, Tales from Topographic Oceans, Relayer, Going for the One and Tormato
80's Genesis - Duke, Abacab, Genesis and Invisible Touch
Option 2:
70's Genesis - Trespass, Nursery Cryme, Foxtrot, Selling England by the Pound, The Lamb Lies Down on Broadway, A Trick of the Tail, Wind & Wuthering and ...And Then There Were Three
80's Yes - Drama, 90125 and Big Generator
Very difficult for me, as I'd be missing out on major classic albums and songs regardless of which I pick. I probably slightly prefer 70's Yes to 70's Genesis, but prefer 80's Yes over 80's Genesis by a wider margin, so I will go with 70's Genesis and 80's Yes.