Im running optimal labs right now and can say its the best UGL that I've tried. I've used many brands of test from compounding pharmacies (human grade) and just started getting into UGL this year. I can say that the optimal is just as good as the human grade I got as far as dosing and results. The only thing that sets optimal apart from my humans grade test was that the PIP was a little more prominent. But barely any PIP compared toall the other UGL's I've tried. This is due to optimal using benzyl alcohol and benzyl benzoate as solvents in the oil compared to the compounding pharmacy which does the exact opposite that these UGL's are doing for solvents, companies like watson, paddock, and the compounding pharmacy I was getting test from use chloro-something (I forgot exactly what) which is a preservative because they have access to chemicals like these whereas the UGLS just use BA/BB cuz its easier to obtain and its the norm. So that's mainly why human grade is better with PIP. That and they use higher quality raws obviously. But back to the topic, I also have some veyron cyp and EQ and had great results from the cyp, haven't ran the EQ yet. My boy used lixus a bunch of times and lucked out every time and produced awesome gains, although I've heard shitty stuff about lixus. IMO, veyron used to be shit and the PIP would cripple you I've heard, But I think they have revamped there products this year as I've heard lots of good things LATELY about veyron. But if u can get optimal I would go with that