The best thing of SEIV is the Play by Web where you can play against other players! I.E. I have a game where I make a turn ever 24h and a game where I makle a turn every 48h and then you beginn to love the micromanagment you can do

. Also dont forget how old SEIV is already is and that SEIV is writen by one person if I am right informed.
MOO3 ism something I will buy perhaps in 6 - 9 months from now when they get out the bugs they put after they rush out the game with very litle testing. I also dont trust the sayings they make on thyre homepage as every one who whant to sell something only praise the product to the highest and dont say a word about the fallings of this product.
The only thing I know about mthis 2 games and also GalCiv is that they are diverent games and are hard to compare (perhaps SEIV and MOO3 are easyer to compare to each other then this 2 can compaer to to GALCIV)