Who thinks that the benefits of a 14-24mm zoom outweigh the advantages of the prime? Thoughts?
Simple: If you need flexibility, like when shooting weddings or events. 14mm is way to distorted for most uses, but if you have a 24-70 on one ff body and a 14-24 on another, you're covered (just switch to the 70-200 if the situation changes).
Then use a 1dx or wait for the 5d mk4 which might have an actual high iso improvement, and the slower aperture of these zoom won't matter anymore except for carefully staged, thin dof shots or shooting in the dark w/o flash.
My point was that between 14-24mm, you're going to get distortion anyway and that a zoom range of 14-24mm maybe a slight convenience, but an unnecessary feature nonetheless IMO. When would you really need to walk forward but are unable to walk forward with a 14mm to achieve 15mm-23mm framing? The 14mm prime has it's uses in weddings but you just need to be mindful of composition in relationship to image skewing (i.e. I like to use it for shooting peripherals such as wedding dress, cake, venue, etc.). I actually like the look of the 14mm a lot more over the 8-15mm fisheye.