Just embarked on my first journey of SARMs, and now 1 week in, I can tell you that this stuff ROCKS. I'm currently running 25mg/day of MK-2866 and 50mg/day of S-4, both from Uniquemicals. My libido has shot up, the pumps are SICK, and I feel like a million bucks. I'm looking forward to seeing what this stuff really does in the next 7 weeks...