Okay, the title speaks for itself. And I already know about Honor Harrington. And please don't mention franchised stuff like Star Trek, Battletech etc.
I've found an apparently new one: "Marque and Reprisal" by Elizabeth Moon. Anyone know anything about this one? It seems to be selling quite well...
Fictionwise also sells
Empire from the Ashes which supposedly bundles three books by David Weber, "Mutineers' Moon", "The Arageddon Inheritance" and "Heirs of Empire". Anyone read those?