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I agree with Robson, at least mostly. I've used both the 105 and 135 f/2 for shooting sports and it's been a mixed bag for me. I use the 135 the most. At f/2, the DOF is very thin, so you must have very accurate focus. My d3s is my favorite for running those lenses because it has the most accurate AF and the AF motor will drive the lenses a little faster than the motor in the small pro bodies like the d300, d700, etc.
Having said that, I've used them the most on the d300 and sometimes the d700. Both cameras will give good keeper rates in decent light, on decent focus targets. When the lighting goes down and/or the target is poor contrast, the keeper rate goes down significantly, on those bodies.
These are among my favorite lenses. I won't say that they are magical like the 200 f/2, but when you get a good shot with one, they can be pretty close to that standard, IMO. Heresy, I know.