I love a well done dialect. It makes the book ring even truer to character. I am guilty though of being a sucker for a brogue. Some series I will only listen to on audio when the narrator does a good job because it makes the experience even more enjoyable.
Diana Galbadon's Outlander series is a perfect example. I buy the books too but listen as well because the narration is perfect. I am listening to Nora Robert's Circle Trilogy now and am enjoying the lilt of Irish accents with the clash of a New york accent. It is quite well done. Plus who doesn't love Roarke's Irish lilt in the In Death series by Nora Roberts too. I can't wait to read The Shadowy Horses. I was late discovering Ms. Kearsley but am catching up quickly. The Rose Garden is one of my favorite books of all time!