I am happiest with the usability and construction of my 20/2.8 AF-D, which works very well as a manual focus lens and is extremely sharp with a good IQ, but my favorite focal length is 28mm. Unfortunately, the current 28 AF-D is not a great lens in any respect, not physical, and not optical. If they made a 28/2 AF-D I'd jump on it in a second, but it looks like they're into G lenses, which, having lots of old cameras, I'm not at all.
So I guess it depends on what you want in terms of compatibility. Sooner or later, I'm getting a 28/2 AI lens, and calling the problem solved, for me.
I have a 24, but just can't get into it at all as a focal length. Same for 35mm, the not-really-wide, nor anything else either, lens.