 If you liked Hunter x Hunter |  ...then you might like Hunter x Hunter (2011) |
Hunter x Hunter's first series. It doesn't cover nearly as much as HxH 2011 and is slower paced but is sitll a slightly different adaptation of the first arcs of HxH.
It remains incredible. The change is that there are things that don't exist in 2011, things that didn't happen. Things take longer in 1999 but it's still cool