Byard and Burrell both - Byard a bit more of a prankster, though. I haven't heard the more recent Morton songbook stuff (shame, shame) but do enjoy his readings and interpretations of that music from previous projects.
Still, what kills me is West Side Story, and La Vie De Boheme ain't too shabby either.
As an interviewer, Dave has probably been one of my favorites - such an easy guy to talk to, as the one in this thread will (hopefully) attest to.