The 24mm f/2.8 and 35mm f/2.0 AF-Nikkors are both good lenses. I've never used the 28mm f/2.8 AF-Nikkor, but I once had a Sigma 28mm f/1.8 AF lens that I liked (it was the older version with 58mm threads, not the huge new one). You should be able to find used examples of any of these lenses priced within your budget.