All Millennium's products are great, but C5 stands out above all others, IMO. I'm VERY interested in cordyceps, and C5 was one of the first sources I tried. Results were great, even though I was only using it for lifting, not cardio. Immune system boosting benefits are real and strong. Workouts were great, pumps were outstanding. Libido shot through the roof.
I ran out, and decided to compare with other sources. Don't bother: nothing comes close, including CS-4. Nothing.
I can't wait until Nutraplanet snaps MST up, so I can stock up. C5 will be a staple in my diet from now on.