My eyesight pretty much demands I use audiobooks if i want to get through anything longer than a hundred pages in a week. I have been listening to them all my life and there are many great narators out there.

Nathaniel Parker, who did the Artemis Fowl series.
Jim Daly, who did Harry Potter.
Tim Curry, who did A Series of Unfortunate Events.

And this fellow really made Les Mis for me.
Les Miserables - A Heart Under A Stone - YouTube

It's about 60 hours long so the narrator was very important.

Fingolfin vs. Morgoth - YouTube

And speaking of long, Martin Shaw really made The Silmarillion come alive. Even if he can't pronounce the names right.