WK,
Besides the standard offerings of Sugino/Campy/Shimano, the ones that I like are the Spécialités T.A.
Business Cycles Shot
Peter White has them for sale
Closeup and on-the-bike shots here
I really like their clean chainring bolts. They sink flat into the outside of the chainring.
As far as what Business Cycles says about chainline issues - I had no problems with that install using a Phil BB.