The Stephen Fry HP audiobooks are delightful! I tried out the Jim Dale version first, but bounced off the way he did the female characters.

I've been listening to audiobooks in the car with my son, so I went looking for lots of YA; we powered through all the HP books and then the Tiffany Aching series, which is also very enjoyable. (Though I liked the narrator for the first few better than the last half, and I haven't listened/read to The Shepherd's Crown yet because that way heartbreak lies.)