What tribe will claim Hegemony in the Barbarian World?

[Imperator Invictus]

Hi everyone, I want to ask you something before I start a great EB campaign.

Historically, after the decline of the Celts, the most successful Barbarians in the Barbarian Europe were the Germanic tribes (Goths, Saxons, Franks). I want to give that chance to others in an alternate history...

I want to begin a campaign in EB with a barbarian tribe who will create a barbarian confederation and assert hegemony. And then I can involve with more power on the Mediterranean “Civilized” world. The winner of the Punic Wars and the new Unifier of the Hellenistic World will have a terrible barbarian adversary.

I have although a problem in choosing between the Aeduii and the Getai.

Aeduan tribe - because they can reverse the decline of the Celts, a campaign with them will be awesome: civil war in Gaul, resistance against Rome and Suebii, counter-alliances with Epirus and Carthage, landing in Britain and later “pacification” of Iberians and Thracians. Also they have a nice political system, with many magistracies and they can give a voice to all the tribes of their future confederation.

Getic tribe – because they can bring a new religion for the barbarian tribes and their fighting style and tactics are awesome in terms of firepower (a lot javelins and arrows) and assault (the rhomphaia and the falx). Also they are more despotic and they can create a “Barbarian Theocracy”, with units of mounted Ktistas supervising the allied troops of the other tribes.

With any of these two, will be a very interesting campaign and an interesting alternate history. That’s why I haven’t decided yet with whom I will start.
If you can help me, perhaps give another arguments for or against those two tribes.
(please don't bother with others, Arverni believe that their king is a god LOOOL, Suebii are germanics and I've said I want others, and Lusitani have a terrible geo-strategical position)

What is your opinion? ….Aeduii or Getai?