In "sharp look", do you image quality wise or something else? Quality glass will be a bit more than your run of the mill lens. Say around $500 and up. Something in the same range will be the Canon EF-S 17-85 f/4-5.6 IS, EF 17-40 f/4 L. Both really good, sharp lenses. One is an L the other has IS. For added peformance in a general all-aroound lens, you can look at the EF 24-105 f/4 L, EF-S 17-55 f/2.8 IS, EF 24-70 f/2.8 L. There are also lenses from Sigma, Tokina and Tamron, but I personally stick with Canon. Had a so-so experience with Sigma.