Acchi Kocchi is definitely not for children under the age of 20. You need to have patience and appreciation of philosophy, history, politics and so forth.
And you should have mentally evolved past the point of being impressed by Evangelion.
Acchi Kocchi is is the single deepest, most artistic and thought-provoking anime ever created. There is not a single other series that comes close to the level of thought and artistry of Acchi Kocchi.
This is why Acchi Kocchi threads are actually some the best, most filled with discussions and most intelligent threads on /a/. Only the smartest, brightest, and most patient people post in them. Essentially, the very best of humanity posts in them. Conversely, the only people who don't like Acchi Kocchi clearly don't have the mental capability to handle its superiority. It is too hardcore for them. That's okay though. Anime like Hyouka and Nisemonogatari exist for people like them. Acchi Kocchi fans are too good to hold grudges.
Acchi Kocchi is a 12 episode rollercoaster that will take you on the slice of life journey of your life. The mood of the future is captured perfectly and is presented in beautiful light-shaded animation. The solid soundtrack transports you to the cold side of Japan in the world. The unique method of storytelling is groundbreaking and very enchanting. The first couple of episodes might confuse the viewer due to the huge cast, however, this is all cleverly sorted out in the next few episodes and you get into the thick of things really quick in this fast paced anime. Passionate voice acting makes both the sub and the dub an enjoyable experience. With an intricately designed plot and an intriguing set of characters, Acchi Kocchi does not fail to impress. Masterpiece? Maybe. Truly breathtaking? Definitely.