To be honest, for the price I paid (cheap at Kmart one day) they are not bad. However, I would not go out and buy them again. I found they needed around three coats for decent coverage and it was quite streaky. The range of colours are quite nice however I wish they went on as they looked in the bottle. It chipped quite easily and by the time you layered it on it took a bit longer to dry properly than the 60 seconds it claims.
Not really that impressed and I ended up giving them to my friends when I was clearing out some nail polishes (so at least they were happy!).
I find this range of nail polish pretty good, with a cute range of colours. In the past I have used up several of them, including the navy blue, bright orange and silver. It goes on smoothly with great coverage. Generally the polish quality is decent, although the formula did get thick and claggy much quicker than other brands which I have tried. My other scruple is the size of the bottles - they're so tiny that before long you're struggling to get a decent amount on the brush. I definitely prefer larger bottles of polish. The 60 seconds claim also disappointed me somewhat, as this product took no less time to dry than your average nail polish.
Tips: A couple of drops of nail polish remover added into a bottle of old nail polish will fix any problems with thickening formula of clagginess due to age.