Favorite OPI Nail Lacquer

These are my top 3 favorites from the OPI brand of nail polish! 'Mermaid's Tears' from the Pirates of the Caribbean line. Who doesn't love that color? It's like a merky blue. Next is 'It's My Year' from the Miss Universe line. So gorgeous.. it's like a purple with golden shimmer. Last but not least is 'I Eat Mainly Lobster" which is a beautiful pink with fine pink shimmer.. it's very subtle.

What's your favorite nail polish brand and color? Another thing I'm curious about is do you prefer round or square shaped nails?