Probably IMAX 3, HSC and HC Extreme. Very dissappointed in Kick Max, but then again, not a huge kickbox fan. KPC is about the only one I like much. To be honest, I did the HC series so much when it first came out that I burned out on it. I haven't done many of them in a long time. So long that I'm not burned out on them anymore, I should start them again!