I prefer Angband to NetHack because NetHack is "silly." Permadeath makes every decision serious, and I want the game to match that. But I get why other players may want something else. They're both amazing games.
Angband it's a bit dumb for me, a promising town but then just a dungeon with very repetitive gameplay.
Nethack' s dungeon with the philosphy The Dev Team Thinks On Everything (even more in Slashem) makes each gameplay unique as people stated.
On each decision being serious, Slashem it's the reverse: the first levels are a breeze, then you'll have to think twice a lot in order to fight and/or escape or even safely move.
