According to AT&T,  I can downgrade to the 2GB plan and pay $10 per 1GB overage.  This would have allowed me to go over the 5GB I was just blocked at.  So why should I have to downgrade my data plan in order to use more data then my Unlimited plan?

How do they determine the top 5%?  I am in the St. Louis market and have a hard time understanding that 5GB falls in the top 5% category.