Favorite ones: T'Pol, she is a real female and a stark and intelligent one. She can act, if it is necessary against from Vulcan High Council to her Captain. She is a "natural born" warrior, privately and professional. Just like Ro Laren. I think to reduce her only a carbon copy of Seven (which is also a stark female) at least possible to reduce both characters and two fantastic actresses to their physical features. Yes, they are "eye candies" but, they are more than this. There are many woman who are attractive, smart and stark at the same time and it can be dangerous guys, to take them in with only one of these qualities. Nevertheless, a part of audience hat this tendency, I assume that was the reason why Nimoy after very attractive Kristie Alley's Saavik, made the replacement Robin Curtis very masculine to be taken seriously. As a known trekkie, Jolene Blalock gave us best female Vulcan version, despite of all those weak scripts, imho.
Least favorites: Janeway. To make her a stark leader, TPTB let her mimicks first a savage man leader, but that was not enough, they go to next level made her a psychopath. If I serve under her reign, I would organize sure a mutiny for the sake of all humankind and both quadrants. She was not only incompetent, she was literally dangerous.
The next one is Kira, sorry guys, you do not need to discuss, if she is terrorist or not, she called herself more than once terrorist, which is for me made the character unbelievable as a freedom fighter. Also she reacted sometimes very awkward for a experienced warrior. And she was religious, I have nothing against to being religious, but totally against to being blind religious and take own religion as only right one, which she was. So last thing was Micky Mouse voice of Nana Visitor, just like Kate Mulgrew's. My ears bleed every time when they began to cry.
My least female character for all times is Troi. She was only eye candy on the way with 50 IQ and more less EQ to be a someone who council the people. The writer did not even try to give her a little bit scientific back round, you can get better council at the subway from your sit neighbor. She should be only beautiful (not my taste, but it is only my taste) not more. Sirtis played her with very bored silly look and zero passion.