Which characters do you like best? It's Christina, isn't it?
As a note, MSG might be worth watching the movies for; the animation varies from poor to eyesore in many cases because the anime is so dated, and the movies re-animation is much crisper and easier. Then if you like what you saw, go back and get the fuller version; from what I've heard, the movie is a solid representation of the series.
I wouldn't necessarily say the same of Zeta, where the old but still respectable animation has more of a vintage feel than the appearance of a bad drawing board. (None of the grotesque proprotion mistakes seen across MSG.) But from what I've seen/heard, the Zeta movies crop out alot of the character developments and such from most everyone but Kamille, so you'll miss a number of things. Jerid gets demoted to a purposeless named grunt, the support characters lose their charm and proof of character, and so on.