When I bought "Drama" on vinyl, almost 20 years ago, I didn't like it very much. Personnally, I'm not that fond of Jon's voice, although I recognize that he is a terrific singer with an unique voice, so I do not give much importance to Horn's voice. I was a bit disappointed with "Drama" at that time. A few years later, a friend of mine got an import CD and I listened carefully to it - and my opinions suddenly have changed. Later, I bought the remastered CD edition, which I listen frequently (can't say the same to many of Yes' other albums).
"Drama" is not at my Yes Top 5, but it's placed at my Top 10 and as an album which grew on me along the years, it will always be a favorite.