I see that I never voted on this one. It gets a 9. Not my favorite of the Tull reissues, but still very nicely done.
I got a used copy of the big box a few years ago, before they reissued it in the book format. I
almost wish I had the smaller set, just so it would match all the others.
I was already pretty familiar with the quad mix from having a CD-4 vinyl copy. It's got some nice moments, and it's cool for the alternate takes, but I always thought the
WarChild quad mix was much better. This is probably because the
WarChild quad was done either at the same time or shortly after the stereo version came out (perhaps it was actually engineered with quad in mind?), while the
Aqualung quad mix was a "retrofit" done several years after the stereo release. The title track really doesn't work for me without the telephone call effect on the vocals.
SW's 5.1 mix is awesome and fixes all the issues I had with the quad: The vocals sound much better coming from the center channel (the quad mix has them in all four), the title track has the telephone call effect restored, and overall there's more focus on front/back separation compared to the quad mix, which is more of a left-side/right-side deal with some moments of discrete rear activity.
I'd say the 5.1 is the superior mixing job with one exception: "Locomotive Breath". The quad mix on this track is awesome with the guitar licks blasting from the right side and the flute solo isolated in the rears. Now Wilson's take isn't without its strengths: I particularly like how he handled the intro section with the piano upfront and guitar in the rears (the quad mix just has both the piano and guitar in the rear, with nothing in the front until the full band kicks in), but the guitar licks seem to have been dialed back quite a bit in comparison. My best guess as to what accounts for the difference is that SW's mix is more representative of the original stereo balance and the guitar is given more prominence in the quad. I think the guitar-centric version suits the track better, but that's just my opinion.
"Locomotive Breath" (5.1):
"Locomotive Breath" (4.0):