Fullmetal Alchemist is pretty gritty at times. And Code Geass is one of the best animes I have ever seen. While Code Geass isn't really adult in the sense of nudity, gore, or speech, the plot is fairly sophisticated. I highly recommend it.
If you read manga, Death Note is excellent. The anime was horrible in comparison and don't recommend watching it. It didn't give off the same intense feeling as reading.
And yeah. American companies censor all the good stuff in anime.
Viz animation is pretty bad too. I remember sending letters as a kid to Viz complaining about how terrible their translations were.
Sent from my DROID RAZR using Tapatalk 2