Maybe I will check into the robolics stuff if you can vouch for it. I'd really like to run it in the future, but I don't want to waste my money not knowing if I'm getting true Primo or not. I don't have a problem with Tren sides so much, and its awesome while you are on it, but I agree that it's not so awesome once you come off of it. Definitely the hardest gains to keep. I will always use Tren as part of contest prep because of the way it makes you look on it, but Primo is something I'd like to try for lean mass gains at some point.