I would say in a three way tie with Abyssia and Mictlan.
Fomoria is currently at war with Abyssia.
You'll have a couple of artifacts and access to tartarians in a very intriguing game that has a lot of life in it.
Please mail me or post in this tread if you are interested.
Fomoria has a great position. You are currently at war with Abyssia but I think he might be willing to accept diplomatic relations as Mictlan is getting scary too.
The entire nation is geared towards a fear startegy with massive summoned armies of False horrors, Morrigans in battle and Ghosts as permanents. You'll have power over a lot of unique summons. Like all water Queens. And a N9 bless that makes your unmarked troops awesome!