we have a powerlifter on this forum rocco who has said that it worked so good he had to stop taking it. If you do a search for itin the steroid section the posts will come up he has mentioned it on several posts
I think its junk, and no I haven't taken it, but I know some people who have and it wasn't really effective, and yes their diets were good and so was their training. Fat burners work differently for each person.
I personally havent talked to anyone that liked it.When I was huge I tried it and didnt feel that it helped.But like mentioned above this guy said it worked great.So different stokes for different folks