Hi Bunekenek,
Read your post on the KickBox DVD's that you have & noticed that you are missing two of Cathe's hardest Kickbox videos. 'KickMax' and also 'Kick, Punch, and Crunch.'
I've had both for quite some time and while the kick / punch combos in Kick Max really aren't that hard, you're not off the hook: Kickmax has like 10'blasts' at the end that are super tough followed by some leg conitioning drills that will leave you challenged too.
Kick, Punch, and Crunch pretty much covers everything. You get a warm up, intermediate moves, then it takes you into a pretty tough advanced cardio segment followed by 3 kick & punch combos, plus astability ball abs seg. ( this one is about 70-75min long ! )
Like I said: I've had these two for quite a while and still have a blast with all the premixes that you can used with both. Best ones in my book anyway !!
Note: I usually do the premixes because it's pretty tough to do the entire DVD's so I think you'll also find them as challenging.
Morgan