Hello one and all. I've noticed here more than anywhere else, an abnormally high concentration of shooters with the AF-S 28-70 f/2.8D ED. I was wondering what your reasoning was behind this lens versus say, the 17-55 DX, 17-35 2.8 AFS/35-70 AF-D 2.8. Do you also have a 12-24 or equivalent? Wanted to know your opinions.