Hi Carol,
I have Amy Bento's Kickboxing Extreme. Personally, I have not been able to get into it, and I absolutely love Kickboxing. I have tons of Tae Bo, all of the Powerstrike and Cathe Kickbox workouts. A few by Janis Safell and Tracey Staehle's kickbox Sweatfest and a few CIA workouts. Amy Bento's is the one kickbox workout, I just have not been able to get into. I usually will just modify moves that don't feel right for me, and I do this with Tracey Staehle's Kickbox Sweatfest, but Amy's just takes to much creativity, which I don't have, lol. I would say, if you're intrigued by her workouts and they look good to you when you preview them, then go for it. Everyone is different, and there are tons of people who love Amy Bento's workouts. I still have it in my library of workouts, and will do it again, but for now, it just isn't the kind of workout that grabs my attention.
I also have her All Pump Extreme. There again is another workout, I've only done maybe 1x or 2x. I just like Cathe soo much better, that this is another workout that doesn't draw my attention.