You should try Path Of Exile, it's a really nice HnS, very close to diablo 2 in terms of gameplay, but far more complicated (especially the passives skills tree). The game becomes really hard at lvl 70-80 because the experience required is really high you have to use map (drop or buy from others players) to go exp. It's still faisable but like many other I suffer from desync on high lvl maps... except that it's a wonderfull game =)
Drakensang is quite good too.
Diablo 3 was good but is now almost dead and there is not much to do after lvl 60 except parangon levels and acquiring items.
Vindictus is very nice, but get repetitive.