Besides OPI, this is probably the only other nail polish brand I own a large quantity of. Considering it is a fair bit cheaper than OPI, it definitely doesn't skimp on the quality.
The colour range is great and you have a large selection to choose from, not as big as OPI but still decent. Due to the shape of the brush, I find these are easy to apply and that they're very long lasting. They don't chip easily and do dry quite quickly depending on how many coats you apply.
As with any other polishes, there will be some colours that apply more opaque than others - so definitely try a few. The pastel colours with glitter in them are quite sheer, so do require a white underneath them to look more vibrant/opaque.
I think Revlon deserve a high five, they are my fav brand, everything I try from revlon never dissapoints me, I brought quite a few revlon nail polishes from the warehouse they were $6 each, I usually always see them when I am there, I dont have any cons for this product, they have a great color range, not as wide as opi but they have beautiful colors, they last long on the nail, they dont chip easily, they are very opaque, the colours I have the quality is consistant, they are not patchy, they apply nicely, they dry quick, and I love the revlon base coat.