Hi There,
Very tough decision!! The problem is that one of my favorite Cathe workouts EVER is Kick, Punch and Crunch from the Bodyblast Series. It is THE BEST Kickboxing workout. From the intensity series, I would get all of them. So, if I were you, I would get the Intensity Series PLUS the Kick, Punch, Crunch DVD that also has Legs and Glutes OR, at the very least, I would also get Kick, Punch, and Crunch on VHS.
GOOD LUCK and let us know what you decide!!!!
Melssa