I think a lot of people, myself included, get more out of Liszt's drama than his lyricism (which is good but not quite on the level of, say, Chopin) that might go some way to explaining the underplayedness of this piece. Also when it comes to TEs, people come for the show and don't often stay for the depth, if you know what I mean, this piece might be more popular as part of a different set.
I find your comparison to Chopin interesting, I'd somewhat agree, but Liszt can be poetic to the same degree as Chopin, just not in the same style (or with the same finesse, but really, I do love Liszt)
Thankyou though, for getting me to listen to this one again, it is a good piece, even if I prefer stuff like No. 10 in F minor.
And for future reference I'm more of a rhapsody/dante/b minor sonata/mephisto waltz Liszt fan than a Transcendental Etude fan, but they certainly are good.
By the way, I'm listening to the Hungarian Rhapsodies now...they have a kind of lovely quality that lifts the heart in a way Chopin normally can't. While so far, Chopin's "Heroic Polonaise" is easily one of my ultimate anti-depressant musics, Chopin just makes the heart weep too much, that I think he should be taken in moderate doses. My soul is right now being lifted up by the Rhapsodies.
Yes, one's heart may change after listening to his Harmonies Poetiques et Religieuses. Even Liszt's Apparitions written in his early 20s remains perpetual and reigns supreme over a chunk of Chopin's output. So unfortunate that Liszt didn't write music as intricate as Chopin. One ought to hear his Sonata, an absolutely pivotal composition that separates him from the "flashy" superficiality he represented.