OK, maybe this is an apples to oranges. I'll be honest and admit that family and friends will be a majority of my pictures. I have a D700 so far with a 24-70. I have two little ones that move fast and of course don't pose most of the time. The 24-70 is pretty chunky and of course I have to get pretty close to the kids. I was considering the 70 or 80-200 but I'm worried the physical size will limit me from using it. I'm sure you can get used to large lenses but I saw raves about the 135 and it's fast, smaller and seemingly very good to boot. I admit it, I am and will probably always be a casual enthusiast and want to be realistic about my uses, but getting the right shot is worth a bundle. The D700 allows me to get shots indoors I could never get before with DX cameras. Any of you try either or both of these for shooting people (non-studio) ?