I bought just one of the Grand Duos ...and never thought to buy another. When I seen them in person under the light (near the side of the walls in the store). They look so shimmeryX10 (it scared the crap out of me). I than went more in the middle of the store...it was like ...eh! ok not so bad, but I stuck w/ the one that moved me ...light over dark.
Hope I didn't miss out on the "one" that was truly special from that collection.