I don't mean what civilizations do you feel is the best at all when I say this but which one do you think has your favorite design decisions behind them. Personally I like to see a civilization that is built with lots of synergy to his powers where they all paint a very specific picture for how the civ to work. I like Brasil a lot. You get tourism focused golden ages, a culture/tourism focused UA, and a UU made not to win a war but instead bring you a golden age. Everything is put together in a nice little package that tells me exactly how the civ works. I like the Iroquis You rush in you murder people. your UA makes you fast and doesn't make you waste as much time building extra workers for roads. Your UU uses those forests to get to the enemy and is spammable because he doesn't need iron and then your UB is a massive hammer booster. It all combines to tell me to get as many dudes out as I can and tell my neighbors I'd like their stuff ASAP. I like Portugal You build a wide trade empire. The UA and UU both say money a thousand times over while the UI fixes all happiness issues and lets you trade extra resources. I don't think you can scream wide rich victory that turns to an easy diplomatic when the economy is going strong louder then these people. Some civs are stronger yes but in cases like Korea the UU's are sort of hanging out for a bit and saying, "Go getum UA! We will be here in the corner cheering tje UA on." I think they did a really good job planning out what they want a civ to do in the newest expansion except for the on purpose generalists like Poland.