It's a toss-up between OPI and China Glaze. Both last a good while and come in a variety of colors.

My favourite nail colour brand is oriflame as it is very smooth lasts long and i find a huge range of colours they all attrack me plus satisfy me a lot.

opi because it last along time before chipping.

Lippmann! She has some pretty, pale shades that never look chipped.  I also like her hand cream.

It depends on the occasion. I like Opi for more "office-approved" colors, but I too like China Glaze for more wild colors. I have WAY too much nail polish.

Personally I'm a huge fan of Zoya.  Great colors, the polish lasts a long time and I like that it is toulene and formaldehyde free. 

I am loving this teal shade with glitter from Zoya right now. 

I'm an OPI addict. I've never counted how many bottles I have, but there's lots. Here's my 'starry night' look:

CND is my fav!  lasts forever but it is hard to find.  :(

I love Sally Hansen.  Affordable, accesible and good quality 

opi ,is a little on the pricey side , but the color are very rich or light depending on the color you have.