Cardio Kicks is a combo of hi/lo and kickboxing that is SUPER intense and lots of fun. MIC has half an hour of really great mostly hi impact stuff, then 30 mins of step after that.
Circuit Max mixes hi/lo, kickbox and step, alternatng them with weights for upper body. But you could do the step stuff without one and make into just ho/lo and kickbox. Very tough but super fun class.
And from the CTX series, her Kickbox workout is a lot of fun. Not as intense as Cardio Kicks, but still lots of great kicking and punching drills.