I prefer HCE to CF. I think Imax 3 is harder than Drill Max for interval drills. Both workouts are fun. But if you don't have LIC, BM2, or DM cardio fusion will take a little extra to learn since its not brokend down as much as the orginal videos. (IMO). But both are fun.
If your looking to buy one over the other I would say HCE since you have 3 workouts. 1. circuit w. weights, 1. pure cardio 1. cardio with a killer leg no weight needed workout.
Jenn