Lets say you are an FF user - will you find a 35-85 f2.8 more useful than 24-70 f2.8? I have always found the longest focal length of 24-70 zoom odd, it seems to me that 85 mm instead of 70 would be a lot more useful. I know, a 24-85mm f2.8 would be even more useful, but I have no idea how much that will cost and weigh. So lets just say you have only two options available - 35-85mm f2.8 or 24-70mm f2.8. Which one would you take? I am just trying to find out - is it only me or some others also find the 35-85mm range (with constant f2.8) more useful.