The only thing that made no sense to me was that Harry was giving his Dark Avengers a key tour into the American Son labs. I didn't think he trusted them enough to walk him all the way through what he's going to do with his son until I realized that he's not talking to them. He's doing this all for the sake of Spider-Man. He's bragging and it's awesome. The bored look that the rest of the Dark Avengers are giving him is because they don't care at all. Only Spidey cares.
So, yeah, the writing is top notch. I'm loving the subplots. I'm a little creeped out by Menace and her having Harry's baby (if that's actually true... jury's still out). Dialogue during the Dakken fight made me laugh and repeat it to my wife (who humored me by laughing too). It's also a great cliffhanger where, yes, we know Peter's still alive-- we just want to know how.
The art is the weakest so far in this storyline. It's serviceable but nothing to write home about. I actually prefer the artist for part two (Paulo Siquiria?) to Jiminez's art in part one so it's all sorts of messed up.
Anyway, the story was the highlight and the art got us from place to place.
Amazing Spider-Man #597, I give you an 8
. Get a better artist and I'll make it worth your while.