I love playing as the Chinese, with the instant-citizens and automatic large cities.
Russians too, with those Katyusha rockets and other great unique units, plus the attrition bonus.
And the Germans, they're an economic powerhouse with strong late-game units.
The Bantu are also nice because of that sweet population bonus, which is helpful in multiple ways.
I'm the type of player that tends to wait and build up economically before going to war, so I never much got into the rush nations. I most like the ones with strong economies. Also, as a consequence of my economic focus, most of my warmongering is in the late game, so I like the countries with strong late-game units.
[This message has been edited by Kawada Shogo (edited 02-06-2017 @ 06:30 AM).]