I used a 457 for years, finally wore it out got a 767a last year...

Couldn't be happier...

One thing that is exceptionally good for keyboard players is that the polar pattern is hyper or super-cardiod, rather than cardiod. This means that feedback rejection is better from the side of the mike, where keyboard players' monitors tend to be, rather than cardiod, which really wants to be aimed dead away from the monitor for best feedback rejection.

Killer mike for the money...