Hi,
I have Uncommon & Cherché b/c. I bought them 2 months ago and really love them. They're very differents. Cherché is a brown b/c and Uncommon is a more neutral brown/pink b/c. I use Uncommon more often.
Enjoy the pics. I hope that will help you. I have put Uncommon today (with MSF Shimpagne), I am NC30, and I took a picture.
Cherché is on the left / Uncommon on right.
and with flash: