If you have seen the other series Freak mentioned the story will be predictable (new opening seems to really confirm this) but even then this series is still my favorite out of all the alternate timeline series, plus when compared to the other current/recent mecha series I think it holds its own. You should definitely give it a shot.
By the way, does anyone know why only AJ is currently at the half way point in this series? I know they rush their releases but the other groups are at least ten episodes behind. AJ's encodes and subs for the show are just dog crap but I, like a lot of other fans of this show, can't wait for the other groups.