I love complete sets because nos 1-4 are among my favourite symhonies ever. So they MUST do good by them to earn a place on my shelves

. I find this more important than boasting an outstanding 8th or 9th, which are already thick on the ground.
My favourite set ever is the Suitner because it is outstanding in all 8 symphonies, including a powerful, radiant, dynamic 9th. Then I like the Abbado for its meticulous way with every single note as well as the outstanding recorded sound. Some of the symphonies under Abbado are a mite serious for my taste, but the playing is always fresh and zippy, so there’s not a dull moment. For a rounded, warm and sunny view of the first 5 Zender and the SWF are hard to beat. They even manage to make the 6th interesting and have excellent ideas in the last 2 symphonies.
There are other sets that are very interesting (Wand, Karajan, Davis, Böhm, Muti, Blomstedt, Marriner, Kertesz) but for me something is either lacking or
de trop. I must re-evaluate Harnoncourt RCOA (haven’t heard the BP set). I haven’t listened to it in years.