This anime is something everyone should watch before they die. I believe that Hunter X Hunter (2011) should be used as a base for what all anime should be compared to. "On a scale from 1 to HxH, how good was it?" Why do I say this? Because Hunter X Hunter has qualities that anime these days strongly lack. Now, the length of the anime surely helps to allow amazing character development. Some people might think long animes are a turn-off, and I agree. Usually.
Hunter X Hunter is the only exception. The episodes flew by so fast, and all merged together into one beautiful stream, one glorious story. Gon and Killua represent everything you would want in an anime character, which says a lot since they are so different from each other, but at the same time complete each other. I could not recommend any other anime as strongly as this one! Please do yourself a favor and start watching now!
