Hunter x Hunter is pretty much a good version of Naruto. Naruto actually lifted entire concepts from Hunter x Hunter such as Kurapika's backstory being reused for Sasuke's backstory, the Spiders basically being the equivalent of the Akatsuki. Though instead of being more of a typical shonen series it's more of a deconstruction of the shonen series with a lot of it's themes. Yu Yu Hakusho is more traditional, but tries to do a bit of what ended up being perfected in Hunter x Hunter in the later half in the series but it's somewhat of an inconsistent mess in Yu Yu Hakusho (you'll see why when you get there).
Yu Yu Hakusho is basically Dragonball Z meets detective mystery meets school life meets the supernatural. Hunter x Hunter is like a compressed version of Naruto that turns traditional concepts upside down rather than adhering to them.