yeah, 28 mm 1:2.8 close-focussing ais is somehow 'cult' (being sharp and small) lens but the 28 mm 1:2.0 is still better. its imaging characteristic is so unique you'll not find any comparable lens in the whole nikon lens line-up (although nikkor 35 mm 1:1.4 comes close) nor youll find any similar lens in the offerings of canon, olympus, pentax... yes, they have some f/2.0 28 mm lens but none of them will make that sort of images.
and it has CRC in all its reincarnations from non-ai to ais.