I voted Pickard, but only because I couldn't vote twice. Ben Sisko is right up there.
Pickard is the diplomat/intellectual captain. The thinking man's captain. I liked the dignity he brought to the role. He was commanding without always throwing his status in your face (as Janeway was wont to do.) He had a lot of character, and the writers managed to give him a lot of flavor over the years, a lot of depth. Many of the Pickard-oriented episodes were the most character-driven.
Ben Sisko has always struck me as James T. Kirk as portrayed by a good actor. He has a very stylized way of speaking, but it works. He's more a man of action than Pickard, but not without strategic excellence. And the spiritual edge they gave him through the Emissary story arc added a lot to his dramatic potential, as a man of science trapped in the role of a spiritual leader.