Below: This photo was taken with no flash, and you can see how dense and even the sparkle/glitter coverage is.
Below: Here's the WnW over BB Couture Cranberry Crush. It's not quite as dramatic over a lighter color, but still adds a nice touch.
Here's another inexpensive layering polish, this one from Wet n Wild's Rock Solid line. In the bottle, this shade is a pale gold that's filled with tiny holographic glitter. What I thought was interesting about this one is how in darker lighting, rather than brighter lighting, the amount of glitter over the nail seems to increase. Another thing I like about it, is because it's holographic, it shifts in the light giving it a somewhat gradient/fade effect. It appears to fade down the length of the nail, but as your hands move around, so does the gradient. It looks as if there's more glitter at the base of the nail, but it's actually evenly distributed. Not bad for less than $2.00!