Finished with the David Diamond symphonies - most are very enjoyable. Now doing the Walter Piston symphonies, which are kind of similar - not a ton of melody but very tonal and American-sounding. When I'm done with Piston it's on to William Schuman, although not all his are on YouTube. I'm not a fan of the Gerard Schwarz recordings of these, but thankfully YouTube has classic first versions conducted by Bernstein, Ormandy, and Koussevitsky - great conductors all, with great bands.