I own option 1 and use a telephoto multiplier if I need to go out to 400. The image quality and low light capability of the Canon 24-70 and 70-200 are remarkable.
Want to hear your comments regard the combination of these lenses:
24-70 F2.8L and 70-200 F2.8LIS
24-105 F4L IS and 100-400 L IS
which is the better alternative ? Considering all the major facts ! Wait for your constructive comments. Any idea and comment are welcome !