I'm happy anytime the servants get to show their stuff, especially Snake and Mey-rin. The switcheroo Ciel pulls surprised me, even knowing there would be some kind of twist. I'm also enjoying the deepening of Ciel's past (or, I should say, his father's past). And you can't beat Sebastian versus AN ARMORED TANK. Plus, lady soldiers.
In other words, this was an action-packed set of chapters.