I'm late to the party (thought I'd wait seeing as how quality control pretty much doesn't exist anymore and anything with more than 2 discs is probably gonna have some problems cos whoever's in charge is too lazy to check everything, aaaaaaanyway...) but something interesting happened when I ordered via Amazon.com:
I did Amazon.com's chat thing so I could ask the rep if this set has the 2 corrected discs. They said it did and gave me a link where I could order it. The price on this link was less than the already cheap price I found when searching for it on Amazon.com and when I tried to find the cheaper price using Amazon.com's search function, I couldn't. I didn't retain the link to the cheaper set either, so can't post it here, sorry!
I bought it, it arrived quickly and only cost $18 NZD per disc (including shipping to the bottom of the planet).
As you all well know, this set is superb in all respects. Fidelity, mix, value, content, value - all truly awesome.
Quad really did rule and still does. The phantom centre channel is still a wonder to me after all these years. One track on Chicago 4 managed to produce a phantom centre, then other voices either side of centre but in from the fronts (so, between the centre and fronts). Sounded like it was coming from the bottom corner of the TV. Really cool.
I'm unfamiliar with Chicago's music but am really enjoying it. 1973's under-seen gem of a movie Electra Glide in Blue got me interested. Director is credited as James William Guercio (but I've read he didn't really know what he was doing, and so Robert Blake and cinematographer Conrad Hall did the directing).
If you're interested in picking this up, this version is the one to get:
http://www.blu-ray.com/movies/Electra-Glide-in-Blue-Blu-ray/67064/ The slick artwork on the back states it's Region A but I have a Region B locked Sony that plays it. There's another version with Robert Blake's mug large on the front but the audio is only Dolby Digital stereo.