Nofi's recommendation is perfect for classic Yes at their peak as young men.
But there is also a comparatively recent work (just not the last album, that was lame) you should give a listen:
This is a divisive statement, I know, but for 80ies MTV Yes, the "Trevor Rabin solo album with assorted Yes members as guests" is a classic too, "Yes, it's a form of Yes, son, but not as we know it!": 90125 ...