I personally think the quality of their supps are not so great. I am especially put off by the Limcomin's vit. A source which is fish oil, which is most likely very rancid. I prefer all my supps to be whole food based, however, having said that, I do believe that it is best to use Endomets supps when undertaking ARL's nutritional balancing program, as they are specifically formulated for that purpose and I have not heard of people having optimal results when supplementing them from other sources, excluding the single isolates, such a Taurine...