I always had the feeling the AI-S 35/2.8 was under-rated. Sure, it might not be quite as sharp as the older 6-element AI version, and barrel distortion is higher, but the rendition is smoother, and it still performs well when stopped down a little. The older lens is more highly corrected, but this results in less smooth background bokeh.
The focus throw of the AI-S 35/2.8 is adequate, but slightly longer than the AI version with the same optical design (serial no 350001 - 45xxxx), and I think it is a more attractive looking lens. The series-E 35/2.5 has a similar 5-element optical design but it is compromised by being a little faster and more compact, and poorer coatings, so overall it is not as good as the AI-S version.
The Nikon 1001 nights series had a comparison of various 35/2.8 models:
https://imaging.nikon.com/history/story/0038/index.htm but it does not include the last 5-element AI/AI-S versions.