I voted for the Dark Forest; there is more action there. Verdistis was a bit slow moving for me. There are of course several areas you didn't mention.
--Sewers
--Catacombs
--Iona's dungeon
--Stormfist castle--the worst! If in the interest of role playing the Larian's wished to reproduce in me the feelings my character was having they succeeded in the castle--a tiresome loathsome time waster with the most repulsive quests.
--The Black Ring area at the end of the game.


The question is not, Can they reason? nor, Can they talk? but, Can they suffer?
~Jeremy Bentham