Well...
-Greek: Don't care, usually go random.
-Egyptian: Ra, Priest empowering helps a lot, and I like chariots.
-Norse: Odin, not big on dwarves or myth units.
-Atlanteans: Kronos, but I haven't had the xpack long enough to decide (I had the original like a year ago but lost it, now I have gold)
AoE3 Username: Danderson
AoM Username: TheDanderson
xfire: thedanderson
AIM: Danimationz