Okay! Here is my quick and dirty comparison of Laura Mercier Twilight. I used two coats of each polish shown (although, admittedly, Neeka very well could have been a one coater). They are all quite similar in color and tone - with just color they looked really similar in my bathroom lighting.
Paradoxal is maybe a hair more brown than the others and Neeka is definitely just a little more blue-toned than the others.
I've included this awful, blurry flash picture because it reveals the differences a little better than just the fluoro shots alone. I hope this helps someone! Here is a link back to my original Twilight post.