Mine are:
1. Arabian: The Camel Archer is awesome and the bazaar is possibly the best unique building in the game. I often play immortal but the Arabian give me confidence when playing deity
2. Aztec: The cultural boost from warmongering is great plus the Jaguar allows early aggression toward barbarian/AI. The hanging garden is one of the best especially in lake map
3. Mongolia: The civ bonus sucks but Keshiks and Khan made up for it
4. England: You can say England is the only civ that all of its bonus, unique units can be put in great use
5. China: CKN is probably the best. Reaching Renaissance with a band of CKN allows taking cities after cities just a matter of time, plus you dont need to aquire a certain strategic resources. Stealing resources using the generals also fun
1. Arabian: The Camel Archer is awesome and the bazaar is possibly the best unique building in the game. I often play immortal but the Arabian give me confidence when playing deity
2. Aztec: The cultural boost from warmongering is great plus the Jaguar allows early aggression toward barbarian/AI. The hanging garden is one of the best especially in lake map
3. Mongolia: The civ bonus sucks but Keshiks and Khan made up for it
4. England: You can say England is the only civ that all of its bonus, unique units can be put in great use
5. China: CKN is probably the best. Reaching Renaissance with a band of CKN allows taking cities after cities just a matter of time, plus you dont need to aquire a certain strategic resources. Stealing resources using the generals also fun