It's not bad, it's not fabulous. They're beautiful, if kind of dupey, polishes and I really like the Orly formula these days so I'm not complaining very much at all.
Orly Wild Wisteria and OPI Sapphire in the Snow (from L to R: Orly, OPI, Orly, OPI)
These two polishes are almost dead-on dupes. The only way I can tell the difference is because of the gap: my pre-clean-up gaps with OPI Pro-Wide brushes are invariably rougher than the gaps I get with regular rounder brushes like Orly's. Beautiful deep blurple color both. But if you have one, you really don't need the other. Two coats for the Orly, three for the OPI. Guess which one I'll be keeping.
Orly Wandering Vine and Orly Enchanted Forest (from L to R: WV, EF, WV, WV)
There were a lot of questions on how close Wandering Vine was to Enchanted Forest. Here's the answer. Enchanted Forest is actually quite a bit darker than Wandering Vine. Both apply very well though and since I'm a sucker for dark greens, I'm keeping them both.
Kind of a "meh" color to me. I don't know why I decided to get it. It's a bit brighter IRL (cloudy day when I took this pic) but looks like a lot of polishes I already have in a color I don't like that much. Great application in two coats and very glossy finish.