Well, I know I'm in the minority here, and it is Cathe's forum afterall, but I much prefer Amy's Kickbox Xtreme. The music rocks and it's a whole lotta fun! Modify moves you aren't comfortable with and you'll be fine. There is a learning curve to it though.
KickMax, to me, had uninspired combos in the beginning. The pivots weren't do-able on my carpet. Then came the blasts, and if you didn't like the hi/lo on MIC, you probably won't like the blasts - too many were not kickboxing inspired - lots of jacks and plyos. The leg drills were okay, but kind of boring - kind of like doing floorwork standing up.
Sorry Kick Max lovers. This paled in comparison to Kick Punch Crunch, which I love!
Diane