Hi Alrik! Glad you finally got the game, and will be very interested in your on-going thoughts...
Agree the DK's voice is a bit jarring at first, but I got used to it rather quickly. Imp voices were rather good, imo. But a few NPC's later in the game are quite awful <img src="/ubbthreads/images/graemlins/delight.gif" alt="" /> -- a couple of merchants sound okay when you first speak with them, but have completely different (and rather horrible) voices when you open their trade window! (Have since tried a few other games with really good voices & voice acting... but really boring gameplay <img src="/ubbthreads/images/graemlins/rolleyes.gif" alt="" /> ... BD got the important bits right!)
Overall, I had a blast with the game, and expect you will, too!