No, I'm not shaking my head. As I said I have done much reading on the subject. Here is my take on things. Every one has their own opinion based on experience and what they believe of what they have read and been told. I am skeptical of posts that state no problems and unless I see data to back up claims I take it with a grain of salt. I do shake my head when posts go off topic or start dissing others for their opinions.
That said, I appreciate those who endeavor to understand my questions and relate their experience.