I've been on QV prop for about 6 wks. now and have yet to have a painful injection. Makes me wonder if I have alot of scar tissue in my butt. I tried my first quad inj. about 2 wks ago and was fine until a day or 2 later.....ouch! Felt like I got hit with a baseball bat, could barely bend my leg. Think I'll stick to the painless rearend.