The 55 1.2 is derided all over the net.
I have one and like it for what it does.
Contrast can suffer at large apertures but I don't find it to be "the dog" a lot of net experts claim.
In it's defense most normal 1.4's (I own about 5 of various manufacture) aren't that great wide open either.
btw the Noct Nikkor was a 58mm focal length