I currently have the 17-55 2.8 IS and love it . I'm debating on whether I should pick up a 24-70 2.8 to either replace it or go along side it. Any crop body photogs have the 24-70 2.8 and do you like it better than the 17-55 2.8 IS? I feel like I'm missing out on quality, contrast, color with the L quality lens and not to concerned with to much with IS although it helps sometimes. Focal length range isn't a huge deal as I have the 10-22mm and the 70-200 F4 IS. Anyone done direct comparisons on a 1.6 FOVCF body?