Having used this with a D3 for almost 9 months, I have yet to find a flaw. My only regret is that Nikon didn't include VR (especially given the price), but this lens reset my expectations for what good glass can deliver.
Great build, great bokeh and I've never had any issue with CA. Very quiet. Sharp to the corners on full-frame.
Yes, it would be nice it were lighter, cheaper and had more on the telephoto end, but I guess there has to be some limit.