I never bought into all the "legendary" or "dream" lens talk. I suspect alot of these so called tags and labels are created by second hand dealers to jack up the prices. Different lenses are made for different uses if it suits you great, if not, there are others to choose from.
Having said that, the Noct-Nikkor is a good lens. Contrast and sharpness is as good as it gets wide open at f/1.2. No need to step down and great for shooting wide open. It is also made for night photography and for photographing light so that it actually looks like light and not a blob.
I will post some pics once I have a chance to go out shooting. Sad to say right now it is just looking pretty mounted on my D800E.
Hope to see Singapore at night in NOCT. ;p