Speaking of the subject, I think I'll mention an author that I've liked for a while. If anyone's heard of her/read her books, maybe you can chime in too.
Elizabeth Moon's been one of my favorite Sci-Fi authors for a while now. It's actually rather on the hard sci-fi side for the adventure type. Interesting stuff. The main characters are always women, and I would almost call it Feminist sci-fi except for one thing... the male characters are incredibly competent.
Hell, all the characters are, to a fault. You get the idea why, due to the demands of actually using a ship in outer space, especially in battle. Yet, they're flawed, make bad calls, etc. The pivotal characters on the good side are always women, and the villains are also balanced well between men and women so there isn't much RAR MEN ARE EVIL. I like to call it empowered sci-fi more than feminist sci-fi, since she's incredibly fair on both sexes, but it's easy to see the slant she's taking.
There are 6-7 books, which start with the Herris Serrano trilogy. All interwoven, a lot of cause and effect. The structure is very well done, as are the characters. Her writing really picks up after the third book, where she starts on a new main character. Recurring characters abound too, and there is more actual character development than you can shake a stick at. Characters are the right ages too! None of this 19 year old Captain stuff! Herris Serrano, the main character of the first trilogy, is a 40 year old Naval Captain. Esmay Suiza, the second main character after Herris' trilogy, is a 34 year old Naval Sergeant.
Oh, the books also teach you never to trust old women. But who would trust OK anyway?