I'm not exactly sure if I agree with you, but you picked two series that require a bit more dedication than normal. SEED is good, but it's so character driven (and a lot of the art style is so QUALITY) that most viewers have an issue watching it if they are looking for ROBOTAN DRAMA.
So far as 00, all of us hate it, we just watch it. Gundam 00 is the equivalent of a Yaoi fanfic turned into a series, so...
G Gundam or Gundam Wing are pretty badass, but it all depends if you like their pacing and style.