Some respawns gives already too much loot, like:
- Asuras
- Walls
- Ferumbras seals
- Roshamuul
- Nightmare Island
- Diremaws (at the time of the event, this respawn was just BROKEN)
With double loot that became even worse... (a friend of mine profited 27kk in one night hunting at Warzone 5 area, during double loot)
Other than that, you could farm "Killing in the name of..." bosses and profit insanely, like:
- The Many
- The Noxious Spawn
- Ethershreck
Other respawnable bosses would still yield double loot (bosses without the "bag"), like:
- Inquisition boss
- POI bosses
- Pharaohs
- Horestis