I think Vengeance is one of the better Trek books, actually. I wasn't a fan of Rebels, and I still have no idea who is actually depicted on the cover.
Kim: I'm detecting some weird technobabble.
Janeway: A possibly dangerous anomaly that we know nothing about?
Kim: Yeah. I suppose we should steer clear.
Janeway: Ha! Good one, Ensign. Take us in, Mr. Paris.