Jimmy Dean wrote: Great question...between Opera, Who's Next and IV

I'm going to use a point system. Epic songs means that it's widely acclaimed and well-liked by the general public. Note that Rock And Roll is not included as such even though it fits that description - it's a fairly basic rock number that loses its appeal with every listen unlike every other epic song classified below. For that reason, I bumped it to "very good". Very good songs are those that are considered among the better songs of the band's cannon and help the album's cause. Ok songs are those that are good but don't add to the album. Filler means the album would have been better if the song wasn't on it!

Out of the three bands, the Who is my least favorite - I own all of Queen's and Zeppelin's albums but only a handful of Who albums (My Generation, Sell's Out, Tommy, Who's Next & Quadrophenia) - and regardless of that fact, I would still argue that Who's Next is better than A Night At The Opera. 

Opera:

Epic songs - Bohemian Rhapsody, You're My Best Friend, Love of My Life (3)

Very good songs - Death on Two Legs, I'm In Love With My Car, '39, Sweet Lady, Prophet's Song (5)

Ok songs - Lazing, Seaside Rendezvous, God Save The Queen (3)

Filler: Good Company (1)

Points: [ (3 x 5) + (5 x 3) + (3 x 1) + (1 x -1) ]= 32 / 12 x 10 = 27pts

Who's Next: 

Epic songs: Baba O'Riley, Behind Blue Eyes, Won't Get Fooled Again (3)

Very Good Songs: Bargain, My Wfe, Getting In Tune (3)

Ok songs: Love Ain't For Keeping, The Song Is Over (2)

Filler: Going Mobile (1)

Points: [ (3 x 5) + (3 x 3) + (2 x 1) + (1 x -1)] = 25/9 x 10 = 28pts

Untitled (IV):

Epic Songs: Black Dog, Stairway to Heaven (2)

Very Good Songs: Rock And Roll, Misty Mountain Hop, When The Levee Breaks (3)

Ok Songs: Battle of Evermore, Four Sticks (2)

Filler:  Going To California (1)

Points: [ (2 x 5) + (3 x 3) + (2 x 1) + (1 x -1)] = 20/8 x 10 = 25pts
Utter nonsense.