woa, this chapter. Gon, Killua and Leorio are now after the Phantom Troupe, and there's some great tension. Leorio is really underrated, this is one of his best moments. His plan with the arm wrestling leads them into the underground business. He might not be strong or bright, but he is street smart.
The meeting with Kurapika and Uvogin is also really good. I like the transition that we see Kurapika while they try to call him.