I'm sucker for Island accents. Probably why I enjoyed KOAR so much, gnomes there had absolutely adorable voices.
The bandit guy who guards the door at the ruins, with his excellent broad (of course, it's very clean and refined, much easier to understand than the actual broad, otherwise 99% of players would have great difficulty with his lines, I suspect).
Gale's VA is absolutely on par with his role. Astarion... it feels as if the actor is overplaying it a lot. Maybe they should have found someone with a better RP, as this one reeks of fakery.
Auntie - spot on, 100%.
I like Auntie Ethel as I always thought that her voice acting was great, I also like the Narrator and Minthara's voices. I didn't really care for Lazeral's <sp?> or Astarion's voice. I thought that Astarion's was too melodramatic and flamboyant that I can't stand listening to him it just grates on my nerves.