Bruckner is certainly among the top line of my favorite composers, so I'd like to list my preferred recordings. Of course following is my personal opinion only. Moreover I have to say a sorry for my restricted language also. So please don't feel offended when you disagree my opinion.
No.1 : It's one of the most daring and aggressive music I've ever heard. It's a piece reserving the mentality of 17 years old boy which was actually written down after he became 40. Jochum/BPO is well balanced in all aspects. Sawallisch/BRSO lacks some Brucknerian thickness, but that fits the work's aggressiveness well.
No.2 : Insufficient sample to pick some.
No.3 : I'd pick Schuricht/VPO and Kna/Munich PO (64).
No.4 : I learned this work by Walter/Columbia SO and it's in my favorites yet. Among recent additions to my collection van Beinum/RCO was quite attractive. So straightforward playing without any ostentation.
No.5 : Sinopolli/SKD is maybe the best record of his. Everything is almost perfect, and the recording is at the highest level. Matacic/Czech PO is another powerful rendering. I think I can leave Horenstein and Furtwangler by which I've learned this work.
No.6 : My favorite is a live version of Klemperer/New Philh (67,Hunt). It has force and vividness I think insufficient in their studio version. Keilberth/BPO is grave but I feel it migth be tedious. Sawallisch/BRSO's lightness fits the work's mood but that sounds rather less Brucknerian. Deletion of 1st mov. in Furtwangler's version might be the worst disaster in the history of classical recording.
No.7 : Among many great performances, Kna/VPO is my favorite. This is very strict playing and rejects any popularity in this work. Nevertheless it presents every familiar melodies in this work most enjoyably. For van Beinum/RCO, I can repeat what I said on their No.4. Among stereo versions, I'd pick Walter/Columbia SO (warm and gentle), Matacic/Czech PO (heroic), Karajan/VPO (well...). A pirate version of Celibidache/BPO live performance was very impressive (so slow... but great).
No.8 : I can't say which is superior among 3 Furtwangler's versions. VPO(44) is introspective. BPO(15.3.49) is brutal, and BPO(14.3.49) is the middle way, but they're all worth appreciation. Kna/VPO (61) is also great live recording.
No.9 : For this work, I was seldom unsatisfied with recordings I've heard. I'd pick Giulini/VPO considering the orchestra and recording. Others I'd like to mention are Walter, Klemperer and Schuricht.
String Quintet : I have Melos and Raphael and prefer Raphael slightly. Melos is more ascetic, distant and feels more mystical while Raphael sounds fuller and easier to see structure of each voices.