Yes remains pretty underrated as an actual "rock band," I think. Chris Squire for me is the key to the whole thing working. Such a huge, often rude -- dare I say punkish? -- bass sound, especially on those first three records. He and Bruford made a great rhythm team. Diminishing returns after CLOSE TO THE EGE, sure, but I would agree with the assessment that, of all the so-called prog rock groups, they were actually the least pretentious and most capable of spinning out memorable melodies.