^^^ Good point about the hoods classtime. If you went with 7400 levers, the original non aero flavor is probably going to be easier to get decent fitting hoods for. Shimano and hood compatibility can be an obstacle. They may not be optimum though, according to T-mar..
Just to clarify, what I said about pre 7400 dura ace doesn't apply to 7400, which is excellent stuff. I'd probably want the levers to match too.