My vote goes for 24-120 f4 and 16-35 f4. I think it is nice to own 14-24 f2.8 and 24-70 f2.8, depends on your application, but for me it is too big and heavy for my purpose. My gears are mainly use for holiday and I really like to have something good but compact, so the 2 f4 combo is the best compromise for me.