I agree with the others that if music is important to you, you don't want Spinervals.
I have a Johnny G tape, but I haven't looked at it (the shame!), but the Cycle Reebock (Robert Sherman?) one is good, the Jay Blahnik is supposed to be good, and Mindy Mylrea's is fun. So you have a few non-Spinervals choices.
The Spinervals workouts are designed primarily for cyclists and triathletes who are training inside, so they're less focused on the music and more focused on particular performance goals. They're fun because they're hard, but the music is not particularly motivating, and they aren't choreographed to the music at all. AND, I'm in one, so I'm sure I'm biased.