There's no shounen series in existence that comes within spitting distance of
Hunter X Hunter as far as world-building and its large cast of characters are concerned (though
Fullmetal Alchemist: Brotherhood,
Law Of Ueki and
Yu Yu Hakusho had their moments). It's a helluva lot better than Bleach and Naruto, and I'd say it's better than One Piece too in several respects.
The 2011 reboot has covered the majority of the manga up to this point, so there's where ya'll should be jumping into HxH.