Yes, I got the 1.8 G, and so far, it looks like a great purchase. (Over 400 shots with it last night.) This is a refurbished lens, but I can't see anything about it that isn't like a new lens.
The first thing that makes this lens such a winner is its speed. With an aperture of f/1.8, I was able to shoot my D700 hand-held, 1/160 sec at ISO 640-1000, without flash. (The range of ISOs due to inconsistent lighting around the stadium.)
The clarity and sharpness were also fantastic, although this is partly helped by the speed of the lens. On some of my shots, taken of people walking on the turf, you can see small bits of turf flying up as a result of their feet impacting the turf. But no matter, this lens is optically fantastic, as far as I'm concerned, and that is even after using it only wide open. I can't wait to see what it can do stopped down!
WM