Here's my prohormones story:
Last year I experimented with 6-OXO, which is not a prohormone, but I thought it was helping, so I ordered some more online. They accidentally(?) sent me two bottles of 4-AD. I read up on what it was, said f*ck it and tried it out. I seriously gained big time using it. I've weighed about 180-185 lean for several years but now I'm 207 lbs. This was about an 8 week cycle, lifting 2-3 times a week! I got a little fatter but definitely more muscular. My ex-girlfriend even half-jokingly accused me of using steriods. Warning though - I got a slight case of gyno practically overnight about 2 weeks after I stopped (I read about gyno on these forums and now taking nolvadex for that, fingers crossed).
I'm planning on lifting natural for a few months then trying another cycle of 1-AD which I bought right before the ban, this time followed by proper PCT. I doubt prohormones are better than roids but they worked for me.