I enjoy Step Jam on days when I don't want much intensity, but just to get the blood moving, warm up the muscles, and have fun doing it. Step Works is a classic for so many reasons - it's more challenging than many of her earlier tapes, and very well choreographed; lots of intense fun. PowerMax is fun and full of power moves. I've just discovered Step Fit, and really, really like it. The choreography is fun, the music is good, and the intensity level is up there if you use an 8" step. These are the ones I keep returning to, although I do also own Mega Step Blast, Step Heat, and Step Max. I don't reach for them nearly as often as the ones I mentioned above, however.
Happy stepping!
Sandra