I make no real claim to knowing what my single fave Jazz track is, but the first candidate that popped into my head was the Bill Evans Trio's version of "Milestones" from Waltz for Debby, so I'll go with that. And anything else by the Evans-Motian-LeFaro trio is probably in the running.
And I'll second "All Blues" as well, if I get to "vote" twice.