I've only tried Stranger Tides thus far and I love it! This has got to be one of my favorite OPI collections!
Skull & Glossbones / Stranger Tides / Steady As She Rose / Sparrow Me the Drama/ Planks a Lot / Silver Shatter
Check out how close shade-wise Do You Lilac It? and Planks a Lot are. Upon first glance, they look nearly identical. But if you look closely you can notice a difference.
Guess which one is which!
Planks a Lot on the left and Do You Liliac It? on the right. Planks a Lot is darker, more of a grape purple. I wonder how different they would appear on nails.