Had the same decision to make about a year ago. I went the 24-70mm route. Both are excellent piece of glass, but it all comes down to the shooting style you like and flexibility you want. I got a Sigma 10-20 that coves the wide end and I use my 24-70 primarily between the 45 and 70mm range.


Are you considering going full frame/APC-H in the near future?


As I said, you can't go wrong with either of the two.


Joël