Whenever I'm looking for a quick style for my nails I opt for these nails first. I always find cute patterns at a good price at Walmart. My biggest complaint is that the only come as stick-on nails. I prefer to use glue-on nails. For the price I'm paying though, I tend to just work around it by gluing them on anyway. They last a bit longer that way. The only downside is that the glue tab on the nail doesn't extend all the way to the edge of each nail, so the nail glue doesn't spread there either and the nails start to lift and catch on things (usually my hair) by the end of a week.
Like a few others have said, they're great for a last minute event where your nails don't take a lot of beating up, but for something to last a little longer, go for a glue-on brand.