What are your thoughts on Zep II?

Personally I think it my least favorite album of theirs. It just has too many non memorable songs/riffs, and the mix is terrible. Whole Lotta Love is obviously a tremendous opener, What Is and What Should Never Be has a great and catchy chorus. The Lemon Song is steamy and Thank You is an absolutely beautiful ballad. But Side 2 aside from Heartbreaker is boring and dull. I never liked Living Loving Maid, Ramble On and Bring It In Home and Moby Dick aside from a Bonham showcase is pretty bare.

But what are YOUR thoughts on this album?