I've used it a couple times. I'm in Canada, so the store bought supplements tend to be weaker than in the US because Health Canada has way too many restrictions. But I ordered some of this from the US. LG Sciences sells a stack - trifecta stack - that has M1D, MMV3 and their own PCT. I've used it twice, and both times my strength went up and my muscles filled out. My sex drive ramped up and I developed a pretty hungry appetite. I could notice the difference when my uniform shirts at work began to fit tighter around the shoulders and short sleeves. These results were after I had hit a plateau from my regular workout routine.
So, compared to any storebought supps in Canada, I'd give this a double thumbs up and rank it as the best OTC supplement I've tried.