Oh my,
so many to choose from...
Do you have a preference? Do you like more athletic style step or more complex-choreo step (aka-dancy)? If you're like me, then BOTH
Choices for athletic-type step (in no particular preference order):
1) Athletic Training
2) Intensity (slight learning curve)
3) Imax 1 (the original)
4) Body Max 1 (the original), Body Max 2 (learning curve)
5) Athletic Step (learning curve)
These all feature plenty of "basic" step moves like power 3's, 7's, 15's, repeaters, L-steps, knee's around the world, box jumps, ect.
Choices for complex-type step:
1) 4 Day Split High Intensity/Low Intensity Step
2) Rhythmic Step
3) Step Moves
4) Low Impact Challenge (from the Low Impact Series)
5) Step Blast
Honorable mentions (both athletic-style + complex):
1) Imax 2, 3
LOL, I think I mentioned every single Cathe step workout!