I have a buddy that has just finished a cycle of MC's IGF and a few months ago ran a very high quality supplier's Powdered un-mixed product.
The results were virtually the same according to him, and the price on the MC"s is better and the fact it is pre-mixed is easier as well...
So if you have not tried it yet, this is just another reason to try MC's version, the quality of it. I have never heard one story about someone being unhappy with results after using it.