The QV enanathate looks the same as the 10cc bottle only bigger. I have heard a lot of bad things lately about QV. Even before the bad press came out on QV people complained about the pain associated with the 50cc bottle. Not sure why, I would think it should be the same as the 10cc bottle.
Those products exist if that's what you're asking. We know there are QV fakes, and they can be spotted by thier poor hologram.
Don't know too much about Blue Diamond.