This is the third cartoon to bear the X-Men name. There was the original 80's X-Men, the (best) 90's cartoon, and now Evolution, presumably set before the first two series, or so you think.
The problem is, the numerous incarnations of the X-Men all seem to tell the story differently.
We have the comics, the three cartoon series and now the movies -all setting the characters in a different origin to the other.
If you're going for the cartoons though, the best is by far the 90's series - pure action, with an underlying storyline and a fantastic theme tune.
Evolution seems to have fallen into the trap of most recent cartoons - it's no longer interesting and can only really appeal to children.
The 90's series dealt with very adult themes at times, and although the quality of animation seems a little choppy these days, it still stands as the best X-Men cartoon series.
The plus for Evolution, then, is that it has good quality animation. Just needs those darker and more interesting storylines now.