There are lots of different kinds of great... can't pick one favorite right now ... been liking Monk and Mal Waldron a lot lately tho'. Here's a few who have real big talent and brilliance, (but maybe not real big notoriety):
Paul Plimley
Simon Nabatov
Sylvie Courvoisier
Jean Michel Pilc
Achim Kaufmann
Myra Melford
Misha Mengleberg
Francois Bourassa
Michael Borstlap
Joachim Kuhn
Vijay Iyer
Sakoto Fuji
Horace Tapscott
Paul Plimley
Simon Nabatov
Sylvie Courvoisier
Jean Michel Pilc
Achim Kaufmann
Myra Melford
Misha Mengleberg
Francois Bourassa
Michael Borstlap
Joachim Kuhn
Vijay Iyer
Sakoto Fuji
Horace Tapscott