For me, the most insightful recording of Eroica is the 1944 Furtwangler version. Maybe, due to similar controversial, probing time, this version reflects the best the anguish, hope and desilluisions of Beethoven.
None the less, this is a version, which to enjoy needs you total attention. It is like Wagner imagined to play his cycle: once a year, when you are prepared to immerse yourself into the music and concentrate on it.
If I would like a less demanding version, with beautiful sound, I typically go for Karajan 1963 version of Eroica, or (on the other side of the pendulum) the Savall version. The Savall version is so well recorded that it is sheer pleasure just to hear the colours of music.