My favorite polish is "No More Drama" from Deborah Lippman (in collaboration with Mary J. Blige)... it's a beautiful sandy beige with just a hint of shimmer...
Most recently, I bought a pale, French Mani colored polish from that new "Nic's Sticks" by Nicole/OPI. I love the color and it was really easy to apply!
Other faves... Essie, Orly, Shu Uemura, and of course OPI OPI OPI!