Assuming 16-85 has about the same distortion and a tiny bit less sharp, which one would you pick? Im a sucker for fast lenses but im also a sucker for VR. If im shooting at night at 24mm, f2.8 will allow me to go only 1/20 at around 24mm, while with f4 and VR i will shoot 1/6 no problem! If i was doing portraits at 50mm, i will need to use 1/40 at 2.8, but with 5ish and VR i can do 1/20 easy. So the only advantage is when the subjects are really moving. And even then you can crank iso or use flash. Although ofc it is an advantage still. On the other hand 16-85 also has superior reach which is importaint. 17-55 is build better, but is also heavier and larger. What do you think?