I ran the QV cyp at a gram a week, no pain and the results were on a par with other test that I've used.
I'm on QV enanthate now 1250mg's week, as I said in a earlier post and others in this post have said, it will cause some pain and local swelling. I have a knot in my ass still from monday from a 3cc injection that I didn't mix with something else. As usual the glutes hurt alot less than the quads.
I am also running Animal's fina at 100mgs a day along with it, and yesterday I mixed 1.25cc's of enan with .75 cc's of fina and shot each quad. That caused no pain and no swelling. If not mixed, and shot in the quad you can expect discomfort by the next morning. I've shot sust at 3cc's before, and it's worse than that.
Besides that minor inconvenience it does work great and you can't beat the price.