Personally.... I use a product called Oxypowder . That's the one I prefer, because the other's tend to make me feel more constipated, then I was before I started a cleansing product. I've tried a bunch ofthem, and thats the one that works best for me and my body. So, if you were gonna try a product, that would be the one I recommend.
I've never heard of the one's you listed above... which can't be a good sign, can it? You have many options from doing an enema at the house, or going to a hydrotherapist. But those can be pricey..
But if you want to do one at the house, then I would say the best thing to do is change your diet. Eat alot of fruits & veggies, as well as drink alot of water. Which is what we all should be doing anyways, and forget about all of these products that promise to do all sorts of things for you.