As a long time Nikon user I was happy back in time with the 50/1.4D which on a DX sensor didn't show big flaws, once I got the bigger sensor the lens ended up collecting dust; the 50/1.4G never got good reviews and always been too expensive vs performance, the Sigma, as said above, huge and AF issues... at the end I got a 60G which is a very very very good lens but it's not what we look forward in a big aperture lens.
I was very lucky at getting the 58G, it's a very stunning lens, some may argue it's not sharp, field curvature, expensive, very expensive bla bla bla but it is a pleasure to shoot with and especially adapted on a Z body it raises the keepers rate to a higher magnitude.
Looking for a 50, with the idea of it being a small do it all lens (I can't really shoot anything wider than 50, it doesn't fit my brain), couldn't find anything and while on a trip I got the 50/1.8S, wow, it's beyond sharp, very well corrected, dunno how much of that is the lens and how much the camera's firmware but who cares, using it on a digital camera have to accept the compromises but results are amazing but when looking at the photographs I only see a very sharp and very corrected photograph, nothing else and as such I most often adapt the 58G, once in a while an old Contax 50/1.7 and still looking for a native Z mount with some character not being as big and expensive as a 300/2.8 so as much as I wish I could afford the 50/1.2S I will pass (have the 85/1.2S and as great of a lens it is I have a hard time deciding to take it for a stroll).
Thinking of a Voigltlander but as per MF I maybe keep the Contax or sell it and move onto the former, good to know that Nikon is back onto 50mm lenses with a variety of tastes to fit!