Heh, I'm so glad I have all the chapter + the anime to get all of this wonderful story all at the same time. I can't even imagine how much hell it was to deal with these hiatuses as this arc ran.
Anyway, this was great. The faces Netero and Pitou made were fantastic, as well as one of my favorite lines from the series "You just made a bad move, little ant." Zeno's description of Netero has always been pretty interesting for me and I think it was better placed here, right after the aforementioned line. Pitou literally didn't even know what hit him. But there is no way that crazy feline is out of the way just yet.
Also, Gon, Killua, and company made it into the Palace only for Youpi to be there. Not what they expected, to say the least.