I've only seen the first six episodes of Arjuna.
I've also become a vegetarian since.
With stunning(yet not always well blended) CG artwork, an odd yet still interesting plot, Arjuna is not something you want to look over, unless you really, really like meat.
Music is directed by the ever awesome Yoko Kanno and the voice casting is perfect. All of the characters look like people, not to mention they move realistically, too. The plot is a bit preachy but it's just trying to get the job done. The humour in Arjuna does not rely on swirly or starry eyes, but on things that would happen in every day life. Every day life if you were a girl with hair that goes weird everytime the earth is in trouble, that is.
From what I've seen, the series ties events together nicely, and is stunning visually and pleasing to the ears. From what I've seen, I also highly recommend.