Left to right: Wet n Wild "Red Red," OPI "Color So Hot it Berns," and Hard Candy "Fishnet."
My quick-n-dirty swatch:
Thumb= WNW, pointer= OPI, and middle= HC
As you can see, they are all very similar in color. CSHIB is perhaps more orange-toned than the other too, and the WNW more blue-toned, while the HC is more in the middle.
As far as formula goes, I honestly prefer the WNW. The Hard Candy one was too thin while the OPI was too thick. The WNW applied like a dream. All dried very well and have nice glossy finishes.
Ultimately, because of the ease of application being the only difference really with these polishes, I gave 1st prize to WNW "Red Red" and the other two are tied for 2nd.
I don't think I need all three, they are all so similar. Some may prefer to have them all, they might be different enough to them. But this el cheapo wishes she only had one of them.