I personally prefer the Rebuilds over the original (at least, from what I've seen so far, as I've yet to se 3.33), simply because the Angel fights are some of the best fight scenes I've ever seen (especially 2.22, dear gods, was that awesome) and it's a little bit more to the point. That's no detriment to the original series, of course. Neon Genesis Evangelion was and still is something that anime should strive to be. The fact that it can juggle and develop the psyches of so many characters in the span of 26 (28 counting The End of Evangelion) episodes as well as it did is something to be admired. On the downside of the original, however, is the massive shortcuts it took in the animation. Need I remind you of the scenes where the characters just stood there? Doing nothing? For two minutes straight? Yeah, scenes like those, and scenes that pointedly avoided showing any movement, including the movement of the characters' mouths, were massive shortcuts in the animation due to budget constraints. Of course, when the animation needs to be good, it's great, but those scenes were just... ugh. The manga is great. It's more or less the original series with a few divergences (from what I've read, anyhow).