17-55 F2.8 IS, within your budget (around $1200) and a nice lens from all the reviews (do a google search for a review). The build is reported to be L quality, from what I've read, the reason this lens doesn't have an L designation is that Canon doesn't give L designation to "S" lenses as they won't fit full frame DSLR's. Other than that the Sigma 17-70 is a very good lens for the money.
Last edited by acropolite; 12-09-2007 at 07:59 PM.
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