Yesterday I saw
this post by RijaH, which made me go directly to
Alicejohavesentials, as they are the place to be for Barry M. I'm lucky Alice lives close to where I live, so I could pick my order up immediately.
Barry M-Dusky Mauve seemse to be THE Chanel Paradoxal dupe. I decided to compare Barry M to Purple Grey, and this is the result:
Index+Ring finger: Dusky Mauve
Middle finger+Pinky: Purple Grey

In this pic I added 1 coat of CND-Violet Shimmer to Purple grey (middle finger+pinky)

Dusky Mauve (right) is obviously darker than Purple Grey+Violet Shimmer:

'
I'm very happy with this new Barry M shade, it's fabulous! I read that Paradoxal has a hidden shimmer, well, so does Dusky Mauve! But, if you don't like shimmer, Purple Grey is still a perfect alternative, the base seems to be almost identical. I'm happy I own both shades:) x0