In my opinion, as much as I love almost all the Gundam series, the best of the best would have to be the Zeta Gundam since it was that series that got me hooked on Gundam in general (Seed would follow in a close 2nd place). However, SEED had me hooked all the way through when I first saw it. It was like a drug (if any of u remember ur similar experience), I needed more and more and more. The action was great, the suspense had me on my seat. The whole series was just done right (except explanations but I didn't care since the series had me wanting more action and suspense). So, Ya, SEED gets my vote!