Well, the DA 7600 crankset and the corresponding DA square taper BBs (the older loose ballbearing 7400 one and the sealed 7610 one) are all ISO taper. So either of these combos would be a perfect match, obviously.

But like Nate I'm currently using a Sugino 75 bb with the DA 7600 cranks and DA HF track hubs and the chainline is perfect.