Pro Chem are a reputable ugl there's no doubt about that. I have used various labs and on comparison their short esters give me insane PIP, the kind of PIP that moves into your lower back from jabbing glutes on more than one occasion; I have even had trouble bending down to sit in my car to drive to the gym! And that's only on 2ml of prop 100. That said, the products do work. Libido is up on Test and I get crazy night sweats and insomnia on the Tren Ace. I choose now not to use their stuff due to the PIP it effects my workouts when rotating sites for EOD jabs.