Worf really grew up when he moved over to DS9 after TNG had used him as comic relief and the bringer of the "let's kill everything" plan. His commands in DS9 did show the "let's fight" mentality but tempered.
In DS9 and Defiant operations, Kira seemed outmatched, but give her ground operations and she's set.
Jadzia was always a better second banana than a leader.
Worf got my vote.