I don't like painted nails as they look garish. This leaves my nails looking gorgeous (because people are telling me this - I'm surprised by the comments I get). This buffer is easy to use, the sides are numbered in the order for use.
A good product that I like to use as it has lots of sides that smooth and polish the nails to a lovely shine. I use infrequently so not sure how well it will last but it is fairly cheap so probably not to big a problem.
I don't know what other tools are like, but the 1st side wears off after only a few uses, and it's a little awkward to get into the corners/edges of your nail. It does work well while it lasts, but I won't purchase this again.
Great price, however the shape of the tool makes it kind of awkward to use. You end up putting too much pressure on the either end of the tool and it starts to bend. I also found that it sort of tore up my nail beds.
While the file, with multiple filing surfaces, is a good idea, one is already chipping off after one use. I've had other brands in the past, and this has never been a problem. I will not purchase again.