I haven't bought any Star trek audia since they stopped getting Trek actors to read them. My favorites are Nimoy and Dioohan reading the Yesterday's Son/Time For Yesterday and DeLancie and Barret performing Q-in-Law.
The unabridged Vulcan's Soul audiobooks are read by Richard Poe, who played Gul Evek in TNG/DS9/VOY. I'm loving the first one. Enjoy the lack of the same music that they've used in all the ST tapes for years.