Best Civ IV expansion pack?

[Mr. Krab]

Warlords
Beyond the Sword
Colonization (looks like almost a mod stand alone)

anyone have an opinion?

[Crush]

Beyond the Sword, considering that all of the best mods (such as Rise of Mankind) require it.

http://www.civfanatics.com/ for all of your Civ IV needs.

[Saulbadguy]

Beyond the Sword is the best.

Colonization is a seperate game all together.

I'd just buy the "Complete" version to get both Warlords and BTS.