Daniel Barenboim, because, like I already said in another topic, he prefers to play music in a well-informed yet personal manner, and does not allow himself to being taken hostage by what people think is how the composer would have played the work.
Having said that, I must say I very much prefer the recordings of, unfortunately, dead pianists. Alfred Cortot, Sviatoslav Richter, Emil Gilels, and Robert Casadesus are my personal favourites, all belonging to an era long past us...