I'm a Picard guy. Cultured, reserved, even underplayed, but with big balls of steel. The guy is awesome without trying to be.
Sisko is good, but too much on his toes for my tastes. Considering his position it's understandable, but still.
Kirk is good ol' fun. A swashbuckling hero, with brain and brawn to spare.
Janeway had a good concept (science-y type turned commander, with an impossible mission to survive), but she was written too erratically for me. So no strong opinion one way or the other.
Archer gets on my nerve every time I see him. Sorry.