Rubbish in your opinion...

As I said, it mainly seems to be down to personal opinion in most cases. How many people still swear by Turtle Wax? Many I should think, yet it gets slated all over the place by others.

My point was more that it varies hugely depending on who you talk to. Different people like different products. There are very few right and wrong answers in the world of car cleaning products in my view, it mainly depends on what you like.