I am currently logging it. I'm usually skeptical about most things. However, so far I am impressed. Leaning out with calories staying arou d maintenance, strength has increased slightly as has, raised libido, and good pumps. I'm not well researched on all of the ingredients in it as this is the first time I have used most of the ingredients in the formula (I have tried 25r in the original Mass FX as well as various nitrates.) I have 11 years of training and supplements, I can usually tell what works and what is placebo. Obviously it's no miracle supplement or anything, but as of right now I am happy with my run.
I am currently about 2 weeks in. Let me know if you have any questions and you can also check out my log