I just added a 1D Mk IV to my body lineup of a 50D and 7D. I have the 17-55 f/2.8 for the 1.6 croppers and love that lens to death. However, now I lack a mid-range zoom lens for the 1D IV (I won't count the 50 f/1.8 I have). I'm thinking VERY seriously about selling the 17-55 and picking up a 24-70 f/2.8. I have the Canon 10-22 to cover me on the wide end for the 50D and 7D, so it's not a huge loss there (except for giving up the f/2.8 at the short end).
I shoot sports action and also think the 24-70 could be very useful on the 1D IV during basketball season (also love the 85 f/1.8 for basketball as well).
I've read all the 17-55 vs. 24-70 threads and agree that the 17-55 is the way to go on the crop bodies, but I really would like to have a mid-range zoom for the 1D IV and can't really justify having both the 17-55 AND the 24-70.
Any comments on my plan?

