A very spontaneous list: Andsnes, Hamelin, Zimerman (despite his whackjob attitude lately), Gilels, Aimard, Hough, in no order. I suppose I'm more of a forward thinker than most people here, aside from my Gilels nomination. These days, however, I don't see myself that picky about pianists, for with much of the repertoire I listen to, I don't have much of a choice sometimes.