What are the best pieces to listen to by Beethoven and Mozart?

I love the music of these two composers and I found out the more music I listen to the more I want to listen to. I suggest listen to Mozart's piano concerto #21 then his 40 and 41 symphonies, then his flute and clarinet concertos. Listen to Beethoven's symphonies, #3, 5, 7, and 9 and any one of his piano concertos. Whatever you chose you won't go wrong.