My father in law and I have done taste tests with all the JW blends and we've found that the Gold is really, really, really close to the Blue at 1/3rd the price.
It's extremely smooth and well blended. But because of it's price, I savor it only on special occassions.
The Green is what I'll drink neat or with one ice cube. However, if you're going to have a party, go with the Black - since most people mix it anyway.