I have both the 17-40 and the 24-70. I really like them both, but I'm pretty sure that if I had gotten the 24-70 first, I might not have bought the 17-40. Not because I don't like the wider zoom, but because I cover a good part of its range with the larger, faster, and more versatile lens.
Of course, a lot of that depends on what you intend to shoot. If you shoot a good deal of architecture with narrow streets, the wider lens is a must.
but that is a LOT of money for us. I really think you would like the 16-35L. We really enjoy using ours.




