I recently picked up a bottle of Seche Vite "Dry Fast" Top Coat and I absolutely love it.
The packaging directs that you need to apply the product "thickly.... then set softly down" onto your nails. This is very important - if you don't apply the product liberally, it could cause your nail polish to streak.
If you follow these directions, the product applies easily. Seche Vite dries your nail polish at the speed of light and prevents chipping for several days. It gives your nails a gorgeous glossy finish too.
There is one large downside to this product: the overwhelming stench. I would definitely recommend using this in an extremely well ventilated space.
According to reliable sources (ie: my friend) this product goes gloopy after a few months so it has to be used relatively quickly/regularly, and although it is a bit pricey, I definitely think it is well worth it and will, most certainly, repurchase this product when I run out.