Hi! I used to do the firms and then got introduced to Cathe's videos. I started with the wedding video and it wasn't long before I moved on to all the rest. Power Hour is a fabulous workout! You may need to play with the amount of weight you use at first, and/or reps you finish. I don't know how hard you work at increasing your weights. I must admit I loved the Wedding video when I first started with Cathe, and I still have it, but seldom do it, as Power Hour, Body Max and others are more challenging for me now.
It all depends on how hard you plan to work. No matter what Cathe video you choose, though, you cannot go wrong!
Happy buying,
Lynn