I'm still searching for that perfect system.
For dungeon crawling board games, for example, I purchased many in an attempt to find something like the original HeroQuest from my youth (Altar Quest, Descent, Massive Darkness, Imperial Assault, Doom, Shadows of Brimstone, every D&D Adventure System product, etc.) Nothing worked the way I wanted and I spent a lot of time/money/enthusiasm in the pursuit. Now that the original HeroQuest has been reissued, I'm actually satisfied with dungeon crawling board games - I could get rid of all the others and never care (I guess, except that I like the minis and have painted them).
So far I've found that no TTRPG has "it." I was able to really define what I enjoyed about HeroQuest over other dungeon crawlers. I'm not having the same luck with TTRPGs.