Although higher in price than many concealers, Bourjois Coup de Pinceau makes up for it. The big plus is the brush applicator within the bottle, so that you can apply it precisely and well with little need to blend (although a light touch with a fingertip after application gets rid of "edges"). The packaging is a slim bottle which fits well into any makeup kit or handbag. The light-reflecting pigments in the concealer, while not so good in foundation, work very well in this case, as they give a slight "glow", good for underye circles.
The one downside is the thin texture. The concealer tends to rub off when you're blending it, and a lot needs to be applied to any spots or spider-veins for it to actually "conceal" anything. However, it does tone down the area of the blemish and reduces its visibility.
In short, this is a great concealer for undereye circles and small blemishes, but use a stick for spots.