They're going in alphabetic order and I'm on Magic Bus, so I've got a few albums to go before By Numbers (Quadrophenia, Tommy and Who Are You). That said, I agree with you about the singing. I keep hearing parts of Eminence Front on a TV commercial and that's what motivated me to have a Who day - love the sound textures in that song.
I keep forgetting just how good some of the live jamming sounds.