Hi Tete,
I don't like high impact either. I've pretty much stuck to Cathe's low impact cardio workouts (Low Max, LIC, LIS). I too am looking for some floor workouts with no step. I got CIA's Hi/Lo to the Max and was previewing it last night. I can't say I have an opinion about it just yet. I do know that the 15 minutes I was able to watch last night did not impress me. But, it is all floor aerobics so I will give it a try. I also plan to order CIA's Cardio Camp which is also all floor aerobics. I don't have the Shape workout you mentioned but I do have their "Butts Hips and Thighs" workout. It's a joke. Very dancy floor aerobic routine and an over zealous background exerciser who is very distracting. It's in my pile to sell on Amazon.
Tracey
"Do or do not. There is no try." -Yoda
"Where there's a will, there's a way."