I'm surprised nobody has suggested 400F bars. Very low, nice tight bends, and still available from honda. The DOHC cb750 guys swear by them. surprisingly they are cheaper in canada than the US (and not just because of the exchange rate, significantly cheaper).
I went and looked at the stock 76 and 78 F bars in my garage, the only difference I can see is 76 has internal wiring and cutouts and 78 does not. hence the two part numbers. Holding them next to each other they looked about the same.