If you want an alliance to give you the most fun out of this game, I would choose IAA. I joined myself just over a week ago. I've always known the guys there and since even before I joined I could say that they are one of the best alliances in this game. Definitely one of the most classy, and fun.
We care about [u]you[/u] in IAA. Most other alliance [i]say[/i] that, but in IAA that is what we live by.
We will give you much aid, and your nation will flourish. When you join, you will not want to leave, trust me.
If you use IRC we are on #IAA on irc.coldfront.net
To apply go to http://forums.theimperialassault.com/
Trust me, you wouldn't regret it. If you have any questions, feel free to ask.