I have two gold discs that I also have on regular aluminum and vinyl. Vinyl sounds best, then the gold, aluminum last. The difference between the vinyl and the gold is quite noticable, whereas the difference between the gold and aluminum is noticable, but not substantial. In this case I would probably have to say that the increase in the cost of the gold over the aluminum was probably not worth it. Keep in mind this a small sample. There may be and probably are many cases where the difference between gold and aluminum is more substantial. Thanks, Doug