I have Maria Pires playing Mozart’s sonatas. She is pristine in her delivery. I have others playing Mozart piano sonatas who bring out emotional depth that Pires avoids, I think. Her notes sparkle. For her, I think, it’s all about the touch and the timing. She leans more toward a Classical interpretation, where others lean toward the Romantic.
Argerich is bold and powerful, at least that’s the way I hear her. I know you don’t play orchestral music (although I think you can. I used to listen to it on a $100 Sears suitcase stereo that probably didn’t go below 80 Hz.) If you were to try a piano concerto, she does a mean Prokofieff’s 3rd piano concerto. It has the most amazing build I’ve ever heard. He mastered the art of the build, rising up to a crescendo then descending. Rising up again and descending. Until finally the crescendo comes and it is extremely satisfying.