Count me in as someone who absolutely adores Amy's workouts. Her music is the best, her enthusiasm in contagious and her choreo is so worth the learning curve. Once you've master ASC 2, other step workouts pale in comparison IMO. Amy's Hi Lo Cardio Knockout is still one of my absolute faves for moves, music and sheer sweaty glory.
I don't agree that she's reckless, any more than Cathe might be for having people jump over a step or do fast foot repeaters during her workouts.
As far as her kickboxing form, Cathe's early Kbx workouts aren't exactly stellar examples of form either. I assume Amy's will get better w/ time (like Cathe did), but in the meantime, I know proper form so I don't worry about hers. Some people have commented that her kickboxing is too hi-lo-ish (is that a word??). Cathe puts ample hi lo moves (sashays, grapevines, airjacks, windmills, etc.) in all of her kickbox workouts and I never saw those at my kids' dogo.
I also appreciate Amy's stellar customer service and her willingness to give timely updates on her filming schedule if there are hiccups in plans. Like many others, I was disappointed that she had to shelve her forthcoming series because of complications w/ her pregnancy, but loved that she her shared her wonderful news and photos of her wedding. Like Cathe, Amy is a sweetheart in person too.
There are many instructors that I don't click w/ and even instructors I love sometimes put out workouts that I don't click w/. I'm glad there's so much variety out there for home exercisers and I'm very glad I found out about Amy's workouts.