I am having some problems with QV deca 300 , but I believe its something I did. Three injections in a row from one bottle and it swelled up everytime. Sunday I went to a new bottle and all is good. I take all the precautions before injection, but somehow something got dirty with that bottle. I don't know why I mentioned this, it doesn't answer your question? (lol) Anyway bro I would go with QV because they have stood the test of time and may be a little cheaper than the AP.