This photo offers a nice comparison of two trouser silhouettes. Luciano Barbera on the right is wearing something a bit fuller with a less aggressive taper, while the gentleman on the left is wearing something slimmer with a narrower leg opening. Which you should wear is probably dependent on all sorts of things - the silhouette of your jacket, the shape of your shoes, your age, your build, and your own sense of personal style. As I get older, however, I find myself drifting much closer towards what Luciano Barbera is wearing: a higher rise, fuller leg, and less aggressive taper. It just looks more comfortable and elegant to my eye.