I tried Huge but there is just too much boring city building during the early ages, that's why I play 16 civs on the standard map, so conflict is immediate. This is not to say I am a warmonger, far from it, but it does add a certain amount of tenseness to the game, when you realize this 3rd or 4th city you just built is your last - the rest are coming by culture and conquest.
Edit: I voted for Standard, I would vote for Huge if there were 32 civs to populate it!