Love those three. Interesting that another poster picked a different Rush grouping. I'd go with Permanent Waves, Moving Pictures, Signals as my #1 set. Wow, some major works of music. Worth throwing in Peter Gabriel's Security, So and Us, and all five albums by The Police (pick your 3). Would concur on Pink Floyd, but IMHO Animals kind of got in the way of Dark Side of the Moon, Wish You Were Here and The Wall, but that is splitting hairs on 4 great albums. Honorable mentions: Jethro Tull and Genesis would come close with 2 in a row early on, then a whiff. But later Genesis actually gets a nod with Abacab, Genesis, Invisible Touch. Not really in the same league musically with Yes, Rush, The Police and Pink Floyd tho.