I hope there's someone out there still interested in this thread. It hasn't seen much action lately. Maybe the Head-Fi changes have turned people off. I hope not. Anyway, the Mahler 150/100 anniversary year continues to bring wonderful treasures, and now EMI has a doozy: the COMPLETE works. (Well, not really. More later.) But there were some good choices for the big works:
No.1: Chicago/Guilini. Still a great recording made during the Solti years by the most sensitive Guilini. Great performance, but I hope the sound has been improved over the LP incarnation.
No. 2: The legendary Klemperer. It's not my favorite, but likely the best EMI has.
No. 3: Rattle. Ok choice. Gielen would have been better.
No. 4: Horenstein! What a great choice. Of course, the EMI catalog is loaded with great 4ths, Kletzki being one.
No. 5: Tennstedt. Should have been Barbirolli, but this is ok.
No. 6: Barbirolli. Expected. Great, great reading.
No. 7: Rattle. EMI doesn't have much choice here. The Klemperer is dreadful, and Tennstedt is earth bound.
No. 8: Tennstedt. Fine choice, but other labels clearly beat it.
No. 9: Barbirolli. There was no other choice in my opinion.
No. 10: Rattle. Spectacular version.
Das Lied: Klemperer. This did surprise me. But there are so many fine ones in their library. Would have been a nice tribute to Kletzki to have his there.
Add to it songs & etc. by Szell, Furtwangler, and others and you've got a winning set. For people new to Mahler I wouldn't hesitate to recommend this set. No price yet on Amazon, but if recent budget boxes from EMI are any indication, this 16-disk set won't be too much at all.
Now, as to completeness. Every work is there, yes. But not in all versions. Mahler wrote most of the songs, as well as Das Lied in both piano/voice and orchestral/voice versions. There is no piano/voice version of Das Lied, for example. But since most listeners would prefer the orchestral, who's to argue.
Here the link to EMI's site:
http://www.emiclassics.com/releaseabout.php?rid=49764