NG all the way. Playing D&D for me is always about being heroic, and Neutral Good is as heroic as it gets. Even in the Complete Book of Villains in 2e, there was a section on roleplaying villains of each alignment. LG was there, CG was there, but on NG Rick Swan had to throw in the towel: he couldn't make a convincing story for a NG character to be a BBEG (that is, for a good-aligned party, of course).