How about this: A long time ago when I had my D700 I tried the 3) 50 f/1.4G and was not impressed at all, in the end I got the 5) 50 f/1.2AIs and that has stayed with me to this day.
I now own the D800 and got that with 1)50 f/1.8G, unfortunately there was some terrible distortion, an off-axis lens, can be a freak sample, but wasn't going to hang around to find out! I also purchased at the time 2)60 f/2.8G Micro and to be honest I think this is very good lens. For sure it's not as fast, outdoors is no problem, indoors, I pop on a flash and problem solved!
It really depends on how fast you want the lens to be, there may not be other options, but then again my all around lens for the D800 is the newer 24-120mm f/4 VR zoom, which is great, for everything else I have a pretty complete Canon system!