Amazing Spider-Man Volume 5 #6-7:
This two-parter is a Boomerang spotlight, and answers some questions about his reputation and what he's up to. Steve Lieber briefly provides tie-ins to the early Superior Foes mini-series which featured Spencer's debut on Boomerang (and might legitimately be Nick Spencer's best Marvel work; this is not a knock on his other work.) It's fun and sets up an interesting status quo in which Boomerang is on better terms with Peter and Spider-Man. His arc here is one of my favorites in the run.
A-
Amazing Spider-Man Volume 5 #8-10:
This story brings the Thieves Guild to Spider-Man's world and it's accessible enough that it feels like a force that has been in the Marvel Universe for a while, and that is introduced in the pages of the comic (they've been in the Gambit comics before.) Their big return is a bit insulting given how easily they cause havoc for everyone in the Marvel Universe. And in another subplots that calls for various cameos, Carlie Cooper returns with a support group for friends and lovers of superheroes while MJ's trying to figure out what to do with their lives. It's a big Black Cat story, building on a previous cameo in "Back to Basics" where a new version of Spider-Man interacted with her, and it's fun to see them interact, where they have very different values, but it's also complicated by a realization of how she's been affected by some decisions of Spider-Man's, without being aware of it. Nick Spencer has a bit of a rep for trying to fix changes in the recent comics, and I think what he does what Black Cat is the most effective.
B+