i've always used nitro tech by muscle tech they've been around for quite some time now and their products always worked well for me i also took their cell tech for some time and if your looking for a creatine supliment check that out. any GNC should have their products.
http://www.muscletech.com/PRODUCTS/N...tro_tech.shtml - nitro tech protein shake mix
and i forgot their mixes actually taste pretty good to for a protein shake better than the myoplex meal replacements