There's a nice review of the Nikon 50mm f1.4 AIS here...
Introduction The NIKKOR 50mm f/1.4 was the lens that almost all the pro photographers had on their cameras most of the time during the 60s, 70s and 80s and most young and aspiring photographers dreamed of having on their cameras. From an era when Nikon was the undisputed number one 35mm...
phillipreeve.net
I have one of these and also an older Nippon Kogaku 50mm f1.4.
I must admit that the AIS lens is possibly my least used old 50mm as IMO the look it gives is a little too neutral and modern. I'd say that the 50mm f1.4 Rokkor is the slightly better lens but no lens of that era can IMO stand comparison to modern lenses at wide apertures when looking at performance across the frame and bokeh too.
Of course one disadvantage with all these film era lenses is that you need an adapter which increases the size.