This morning's listening (from Amazon Unlimited streaming) -- both are quite commonly performed "warhorses" of the Western world's concert programs, yet I haven't grown tired of hearing them and learning from these works.
Brahms Symphony No. 4 in E minor, Op. 98 (Bernstein/New York Philharmonic, Sony, 1962). Brahms' Op. 98 is a particularly meaningful composition to me. It's not necessarily my favorite classical piece of all time, but to my mind and imagination Brahms' choice of thematic material and development conveys a great deal of insight into the human condition, without quite the intense hysteria of other well-loved Romantic-era symphonic works. I am familiar with many recordings of this piece. The '62 Bernstein/NY reading is among my favorites, I am confident others will have their favorites. (The Furtwangler/Berlin '43 version on Music & Arts is quite remarkable on its own merits, and I could go through a detailed listing of other recordings). I also have this Bernstein/NYPO performance on CD within the 60-disc Bernstein Symphony Edition box set, which is still for sale inexpensively on Amazon and is highly recommended (100 different symphonic works in renditions which I generally regard as very compelling and spirited).
Sibelius: Symphony No. 2 in D, Op. 43 (Barbirolli, Halle Orchestra, Warner, 1960s). The most frequently performed of Sibelius' seven symphonies, what strikes me is how insightfully the composer takes his primary thematic material and develops it in each of the movements. Since 1974, I've become familiar with many recordings of this work. Barbirolli's grasp of this score and its spirit is exceptional. In addition to this Warner/EMI/HMV version, I'm familiar with Barbirolli's 1962 Royal Philharmonic performance (Chesky CD and previous Reader's Digest LP) as well as an unpublished 1964 Boston Symphony live concert recording I acquired. All are very good, though I think the '62 Royal Philharmonic performance brings even more tension to areas in the second movement and the transition between the third and fourth movements. If you are resourceful enough to find the unpublished '64 BSO concert reading, you will be very richly rewarded.