I've tried a number of colours in this line -also found in Canada as "Quo by Orly Breathable" -admittedly not hard to do as the colour selection is unfortunately a bit limited. It does have all the basics, and seems to be expanding the line, so, hooray for that. Purple/periwinkle fans will find a good home here...This is sold as part polish, part treatment -I'm not sure my nails need to "breathe" (wild guess: the technology used for this and other "breathable" polishes are the same as with 3M's Tegaderm wound dressings?), but it really does seem to do the trick -plenty of polishes leave the tips of my nails a bit peely and weak, but the downside to wearing this seems to be absolutely zero. They tell you to not use a base or top coat, and virtually all colours are fully on in two coats. The terrific Orly rubber cap is a plus as always, and the brush is very wide; I am a bit clumsy and this goes on with no fuss -application is *very* quick. Drying time is reasonable.The ONLY downside to this polish is that it is more prone to getting dents in it than other polishes. This isn't very noticeable, and if it does bother you, a little work with Orly Smudge Fixer will repair it. (The line includes a top coat which I have yet to try, and which I am tempted to pick up to see if this fixes the denting issue.)Apart from the wonder of no damage (or even staining, even with a dark shade and no base coat), the huge plus of this is the wear time. No matter what I do with my hands, it's at least five days before the slightest tip wear shows up for me. This, given how things usually roll (with well-reviewed base and top coats) for me, is amazing. The shine might not thrill those who are into uber-glossy gel-style polishes, but it is quite impressive, moreso given no topcoat. I *really* like the simplicity of this: two coats and done, and forget about it for a week. I end up removing it because I want to change the colour or my nails have grown too much, but have never worn it for long enough to have to take it off due to chipping.A pale pink recently struck me as a bit too blase for the day, and I added a pearlised topcoat, and a gel-style glossy topcoat. I fully expected this to make it start chipping away like any other polish, but no! So I'm pretty excited about that -even if it messes with the "breathable" aspect, it is still far and away the longest-lasting polish I have ever used, and stays that way even when you ignore the directions and start adding top coats to change it up.Full five stars. Canadians take note: the Quo bottles are notably smaller than the regular non-Quo ones, with little to no difference in price, so it's worth seeking out a Sally Beauty or mail-ordering instead of buying it at Shoppers, or at least waiting for a very good sale. The larger bottles are a very good value. Also notable: none have gone gloppy on me; my Seche Restore hasn't come out for these once, even though I am pretty fussy on that front.