For the gals who guessed B was Chanel, you were right! But honestly, in the bottles they look identical. I couldn't have guessed it myself if I had been blind folded and someone else painted my nails. Plus, the camera flash really highlights the undertones that differ in these polishes. As you can see, Sew Psyched is a bit more grey while Khaki Vert has a bit more yellow in it's composition to bring out more of a green shade.
I honestly don't have a favourite out of the two. They are so similar when not under the spot light that I didn't bother to change the polish on one hand and went out last evening with both on! (But seriously, my company was all guys so really they would never notice the difference one way or another I'm sure!) I like Chanel's shade better but Essie goes on thicker. Does it really warrant a $15 price difference? Definitely not.