Well, I'm currently 2/3 into this show.
The good: the mecha designs (even though they're seem to be a mix of M+ & NGE)
The bad: virtually everything else.
-The good guys - not really one likeable character in there. Everyone seems to be nothing more than a selfish brat.
-The villains - are they really villainous? They seem more like bored people trying to pass the time.
-The sexual innuendo - ah come on! Every time I see some hint of sex, I just roll my eyes, especially during the combining into Aquarion part
-The story - only so-so. You can tell there's something coming, but they're just taking too much of their sweet time getting to it.
I don't want to say that every show should be targeted at adults, but you'd think this show should at least be targeted at teens, but IMO, it seems to be more preteen.
The show also seems to be heavily overdramatic at times. They're making David Caruso of CSI Miami look good.
At 1/3 of the show, I decided to stop taking this show seriously, and start treating like a comedy/parody of the super robot genre. Since then, this series has been a bit more endurable.