I have started taking most of the recommend supplements that Dr. McCormick recommends however, I choose to take them individually rather than making is simple and buying his. However, I can’t find a 300 mg magnesium Malate Chelate, Bisglycinate or Taurate. Does anyone know of a quality brand that offers one of those forms of magnesium? Any that I find seem to have oxide filler. To simplify things I'm very close to trying McCormicks supplements however, I have invested so much in single supplements that I’d like to use them before making a change.