"a good introductory collection"
I would recommend this to anyone who's seeking a basic familiarity with what Jung was going after. While some basic familiarity with Freud and Addler before hand would be helpful, he puts his references in enough context that they're not required, and these lectures can and do stand on their own.
In the first few lectures, Jung focuses primarily on the therapeutic process. Over time, we begin to see just how deep his theory goes, and that his idea of "therapy" is nothing less than the completion of man as himself. I found this progression to be incredibly easy to follow and to show how a clinical psychologist can make this move into the philosophical.
I've not heard any of Prince's other performances. I found him to be a little monotone (ala Ben Stein) and some of the accents weren't where I would have thought to put them, but his pronunciation was clean, his delivery crisp, and despite the somewhat academic tone, I would certainly be willing to listen to other texts he's narrated.