I haven't tried all the shades, but I much prefer Sin to Original. The original one goes on kind of thin, and I just don't think it "sticks" as well. The Sin is nice because it has a gold color to it, and I think it enhances any shimmery shadows you may use.
I bought both the Woodstock and 1999 shades. The Woodstock was exactly what I expected - brightly pigmented with rich colors, perfect. 1999, not so much. It was really difficult to make the color pop, even with really light shadow. All in all, I recommend the product, just maybe test the color first.