Master Belisarius and Atraikius,
I am currently running a test with the Orks, the Aquilaeian and my Viking AI. If you are interested I can give you some feedback on how they perform. I wonder which one will send over troops first

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Btw, I am also using armed Colonizers (no stealing honestly) because in my early tests with the AI I was annoyed how many Colonizers were shot down by pitiful ships (like neutral frigates, ughh). I am still very early in the test (haven't even encountered the Orks, yet), but I'll let you know how it turns out.
What is best setting for a test anyway? I am using a small galaxy with 4 players (just me and them) and I gave the AI a low bonus.
Rollo