Hi Amy Jo!
I used Gin Miller's videos exclusively until I discovered Cathe's. I still use the Intense Moves; I love it.
I have Extreme Step, and used to do it regularly. Mixed in with the cardio are pushups and one arm side lateral pushups. (I think that's what they are called.)I never mastered those one armed moves, so I substituted push ups. I liked that tape, but haven't done it since discovering Cathe. Gin's choreography was great for me, because it's simple and straightforward, but I got bored with it eventually. Cathe's choreography is varied and challenging, so I am concentrating so hard on the moves that time just flies by. Gin has a bit of weight work at the end, but after doing it once or twice, I found that it didn't interest me, so I didn't do it.
I also have Power Step, (I think that's the name of it). I would use this now on a day when I don't want to think about choreography.
Of the three, Intense Moves is my favorite and one that I will continue to include in my rotations. I do like Gin a lot, and wish she would make more videos. I've heard that she isn't going to, though.
Hope this helps.
Veronica