I can't deny that Jochum was unique in Bruckner, but what bothers me about his Bruckner is his "stop and go" treatment, his excessive rubato. Some (many?) people seem to like it, but I find it annoying. As to the 4th, my favourite version is Karl Böhm's interpretation with the Vienna Philharmonic (Decca).
And the Bohm seems square and lifeless to me. I bought the 2 lp version when it was first issued and felt the same then.