Well, most people goes to fight for Atreides because they're noble. No one wants to be seen as a psycho (Peter DeVries), or as some kind of failed attempt of superbeing (Speaker). In Dune 2000- Atreides (Most balanced), Harkonnen (Most strongest), Ordos (Most deviators). Atreides in E:BFD have the anoying fact of speed and lach of heavy units. Now, Hark has great forces (The Devastators kickass), and the Ordos have the speed and regenaration on their side. So, in my point of view: E:BFD- Hark, Ordos, Atr. Dune 2000: Hark, Atr, Ordos. Of course, this is my oppinion... About the better house: The better house is the one that you know how to take advantage from their units.