Shackled City
I managed to run the first 3 adventures before my players decided that having jobs or studying was more important than role-playing - thankfully, in a couple more months we'll be back running it again.

This was done using the hardcover. Of the three APs, this is the one I dislike. There's some strong ideas in it, but...
...I don't like the setting much
...the plot is weak.
My biggest problem with the first 3 adventures in the series - well, more
Drakthar's Way and
Flood Season than
Life's Bazaar - is that the dungeons are too big. They really feel like "oh, the PCs need to gain 2 levels, so we need this many encounters, so here you go"... and given the time limitations on the quests, it makes no sense whatsoever to have the PCs go in, fight a few battles, then retreat. It makes even less sense in
Flood Season given the location of the major dungeon. When the PCs rest for the first time, why don't the villains escape?
Just one note: when you need a reactive dungeon, I prefer if the text notes what the likely actions will be.
Cheers!