There's plenty of emotion in Mozart, though it's not the on-your-sleeve variety of later composers. That doesn't mean that in his formal restraint he isn't expressive. What brings one to tears may induce a yawn in another, which often tells us more about the responders than the music itself. Read what Rubinstein and Schnabel said about Mozart's music, and how so many in the early 20th century foolishly reduced him to the maker of only pretty tunes, especially when compared to the Romantic titans then so in vogue. They knew compositional genius and depth, as well as deep emotion, and weren't fooled by popular opinion.
The 40th is a miracle. But the Adagio of the Clarinet Concerto is an entire world.
The Eroica, any number of recordings. Fürtwangler's, especially; wartime for white-hot playing, as if every note is the most important thing in the world.