OPI are good
Barry M are ok
Revlon is fine
Nails Inc sucks
beautyzone2007 on ebay are an amazing seller. I buy my OPI/China Gaze/Orly/Zoya/Nubar there and they're brilliant. CG is my favourite I think but OPI is really good quality.
QVC sometimes do cheap OPI, but usually in large sets so you have to want all of the colours
Barry M definitely, 2 for a fiver at boots atm as well! I've never tried OPI but i wouldn't pay 10 pound for a nail varnish, simply because I buy colours per season if you get me, so i never use a full bottle
I just use rimmel/barry m/George at asda (haha!) nail varnish.....am I missing something here? :/
I find Essie pastels really good. Mint candy apple is one of my favourites.