Did you guys see this article by Consumer Reports? Where the $2 Sinful Color nail polish lasts longer than Chanel's $27 polish?
I actually buy Sinful Color (what a horrible name!), so I have to say that I felt pretty darn good knowing that it came out on top. Chanel was actually 6th. Let's see $2 vs. $27. It's not even a competition!
I will say that a couple of the Sinful polishes actually dried matte, which I am not a fan of, so I recommend quick swiping your nail to see. But other than that, love them, and they dry fast too, which is a huge plus for me. I don't have minutes and minutes to wait for my fingers to dry!