My husband and I like cytomax, however, we end up using less than what they recommend since it tends to be on the sweet side at their recommended scoops.

Our favorite mix though is made by Maxim and can be difficult to find sometimes since it's not a huge brand in the US. It's not overly sweet (which is great) and just works well for us as a hydration drink. The information page for it is at http://www.maxim.nl/products/energydrink.html

Mel