First, let me just say how beautiful the samples of RUFFIAN Endless Love (pink) and Blue Lagoon (blue) are. The Sahara (tan) is pretty, but it's so close to my skin tone when it's dry that it makes my fingernail almost disappear oddly into the rest of my finger. It's a lovely shade, but I think I'd need to be more Summer-tanned so there's more of a contrast between my skin and the actual nail polish. It's not a great Winter shade for me. The pink and blue are gorgeous no matter what, though. They look great against pale skin, and they'll look jewel-toned against a darker or tanned skin tone.
The metallic shimmer is subtle; it looks mature, not childish. When I first took them out of the box, I commented that they looked nearly separated, but that may have been a result of my not shaking them enough. With a solid, extended mixing, I'm not seeing the same problem today.
The polish goes on thick, covers completely in one coat, and dries so quickly it's almost frightening. I was honestly shocked at how little I had to use. There were no streaks, no smears, the coverage was even, and there weren't any of those annoying clumps and ridges that you see so often in metallic or 'shiny' polish.
My only complaint is that the brush in the bottle of Sahara is bent at the tip. Where the Endless Love and Blue Lagoon brushes are a smooth and square, the Sahara brush looks more like a used broom. Lots of bent bristles and flare. If I had a way to replace it - say, a brush from another bottle of RUFFIAN, I'd go for it, but as it stands, I'm thinking I'll end up using manicure scissors to trim the wayward strands.