Recommended I was here then ESN Micellar Casein. This has a casein an excellent protein content and low carbohydrate and fat contents.
With respect to solubility arises with me the best results. I did it both with water, milk and a 1: 1 mixed water-milk mixture and in any case, it was after extensive Shaken (about 1 minute) to einerm pleasant liquid shake without any lumps.
The taste is so far the best I've ever had with a protein shake. In vanilla if he may yet is still quite naturally a little too sweet. However this does not arise Puler-mouth feel like you know it from other Shakes.
Thus, it is all around a good product that I meet the requirements place.