Generally, the pre-AI lenses may be more prone to flare than the later lenses but there are a few I've used and that I can recommend. In some cases, Nikon AI/AIS wides may have different optical designs than the pre-AI versions, and coatings improved considerably over the years.
24mm/2.8 Nikkor-N: This is a sharp lens and I've had good results even in bright light and backlight situations. I always use a hood (just in case) and this was Nikon's first lens with CRC (close-range correction). I love this lens for street photography and grab shots, but watch out for field curvature if you have buildings and other vertical lines near the edges of the frame.
35mm/2 Nikkor-O: I have the AI version, but I've read that design changes in the 70's actually reduced performance from the earlier non-AI lens (or maybe not). A good all-around 35 and I'm very happy with my AI-version.
(Note: Don't bother with the 35/2.8 in any version. They're cheap, but it was the worst fixed-FL Nikon I've ever used. My 35-70/3.5 AIS is much better at 35).
The best Nikon wide I've owned is the 28/2.8 AIS, which is a huge improvement over earlier versions. I hear the 28/2 is also very good, with the same optical design in the pre-AI and AI versions.
I agree about the cosmetics of the pre-AI lenses on the older bodies. The scalloped focusing ring and chrome trim really looks nice on the Nikkormats and Nikon F bodies.