I'm going to add my two cents and you guys can love it or hate it, I don't care. As opposed to Mahler, Bruckner took longer to get really 'good' with his symphonies. I can't stand the Facebook Bruckner group, because those people spend so much time, and make so many postings, trying to convince themselves and each other just how great Bruckner Symphony #2 is. It's anything but a great symphony. I'm not even sure it's a 'good' symphony. Regardless, B3 was clearly a quantum leap forward, irrespective of which version you listen to. B1, at least, has a very good scherzo - better than the one in B2, in my book. B7 is my favorite, fully completed Bruckner symphony, but I also greatly admire B8 (both versions). I think the sketches for a B9 finale don't sound very good, and there's really no point when the entire coda is missing. To me, what is 'there', sounds more like the start of a 10th symphony than a completion of the 9th. Others may feel differently. I like William Carragan, I think he's pretty much a nice guy, but no way would I buy that book and read tons of detail on millions of different Bruckner versions and editions. Life is too short . . . . or too long, depending on your perspective.
And just to show that I'm an equal opportunity hater, I can't tolerate the various Facebook Mahler groups either. There's just so much misinformation and complete utter nonsense. I get worn out when dealing with such an 'amateur hour' place. It's dispiriting! Just try getting those people to read an accurate and serious Mahler biography, such as Jens Malte Fischer's. They won't even go extract some of the tons of good information that's at Marina Mahler's "Mahler Foundation" website. If you folks haven't taken a really good look at the Mahler Foundation site, do yourselves a favor and check it out.
One of you mentioned "Das Klagende Lied". I really think you couldn't do any better than the recent 'live' Gielen one on Orfeo, recorded in Vienna's Konzerthaus with the Vienna Radio Orchestra. That's one case where I truly agree with Dave Hurwitz's assessment.