I've had all of Kimberly's workouts except for the step workout, Progressive Strength, and the new one Collage is listing. Triple Threat was her first, and gave a taste of what she could do. I like Box and Flow better, because I prefer the "Flow" section to the similar type of section in TT, but the boxing segment is a bit short for my tastes.
Play Ball and TT have similar med ball segments, and I like them, but I'd much rather see them combined with something else, like in a workout similar to Absolute Kickboxing, using med-ball moves instead of the bar.
I think my favorites are Absolute Kickboxing and Cardio Camp.