M opinion: Evil suits me best, for the following reasons:
- I can always pick the evil choice in ethical events. Always choosing evil and then going "good" seems like cheating to me, even if it is allowed by the game
- assuming you research the ethics line first (which is no problem in my experience) you get in decreasing order of importance
1. a 100% economy bonus from Mind Control Center
2. the evil weapons, which are at least as powerful as the good defenses, possibly better
3. a 50% military production bonus from Artificial Slave Center
4. free starbase upgrades
5. free invasion tactics
- I have often heard the gooddie civs gang up on you. That is true to some extend, but with your booming economy from (1) you can afford to support a very large fleet, one which you create in no time thanks to (3). Even the crusading Altarians and Torians don't attack you if you are stronger militarily than they are
- Evil civs have all they need to build up a really strong starbase support for their planets. They can build constructors faster than good or neutral with the help of (3), and they don't have to pay for any modules. With many good starbases, it is no problem to match the neutral advantage of the NLC's
I admit that good civs probably maintain better relations with other civs all around, and neutrals might have a slight research edge over you, but NOONE can match the economic and military power of an evil civ