Picard.
He does the right thing no matter what. He always tries to uphold the "Prime Directive" which is in place for good reason, but he's also ready to go against it if he really needs to. He's an explorer, an intellectual, a philosopher, and archaeologist and a human being. His interests are outside his own little world (ahem ahem KIRK). And anyway...it was Picard who was chosen to represent humanity to the Q, and he did a splendid job.
Who else could control a klingon, an android, a techy chief engineer, a kid who wants to become an officer, a doctor who's secretly in love with him, an overly emotional ship's counsellor (with a STRANGE mother) and a first officer who has to bonk every woman he meets.
I think Picard rocks.
_________________
I'm still not exactly sure why I'm on this planet...