I liked the Kresley Cole book . . . all her books work together, you can read them alone, but reading them all adds another dimension as what happens in one often provides depth to comments that are made in another.
The other two stories I did not care for at all. They were very shallow, and the characters did nothing for me. The Jaid Black was particularily bad--did not inspire me to read anything more from her. These two stories REALLY pulled down the star rating, as they added to the price of the book . . . yet added nothing I'd every read again, or recommend to anyone else.