Hello Roland,
What a bouquet of Russian greats
It's funny you mention the 'less accessible' Prokofiev's, because I also admire them greatly, and their uncompromising nature is very much what I hear and admire in Vaughan Williams's Fourth!
Maybe it's just me, but I tend to have a great fondness for
underdogs. That's why I crave Mahler's Seventh so much, not only because of its wonderful music, but also very much out of frustration that people often call this one of Mahler's 'least known works'. Yeah, of course it's one of the least known, but that's not Mahler's fault! It says a lot more about these people.
I can get frustrated when I see today's orchestras programming the same old tired main repertoire, like Prokofiev's Classical Symphony. There's nothing wrong with that work, but there are inordinate amounts of performances and recordings of that symphony, lesser so the Fifth, while the true greatness of Prokofiev, imho, can be found in the other symphonies! I also have a fondness for his Seventh, it has great atmosphere, almost ethereal!
The Third symphony is very, very contrasted, with a lot of what people not familiar with classical music would probably call 'noise', but the quieter sections are almost unbearably lyrical, mysterious, foreboding. Wow...
Rachmaninoff 2 is an endless stream of melodies coming straight from the heart, masterfully paced and orchestrated. The Adagio is almost erotic (note the climax) and that's not a criticism! If the coda of the Finale doesn't leave you with a warm glow, you're a better man than I am