I own 3 shades: The Real Teal (sparkly teal), Mauve Over (pinkish), and Brick Wall (red).
I only bought them because I the colours. The thin brush isn't my fave and it seemed like the quality of the polish differs, depending on the formulations?
Every time I put them on I noticed that Brick Wall is less long lasting the rest, seemed to chip quicker. Mauve Over lasted the longest. The Real Teal has the best "happy" colour.
I own other cheaper brands that perform better. For that reason alone I'll only buy more if it's on sale, in a colour that I don't already owned.
I purchased the baby pink hard as nails lacquer, I found it lasted ok but only with a few coats which took a while to dry. The colour and finish was very nice, but it did chip after a days
Tips: Try it with the hard as nails top coat, it may last longer