[BrianG]

FWIW, my personal favorites in testing are the KoolFlight UBEC and the Hercules UBEC for amperage ~3A. For lower amperages, the DimensionEngineering UBEC is really nice. All three of these had no discernable noise, high efficiency, and heat was respectable.

The CC BEC is king for currents >3A and programmability. But as others have said, the fact that it outputs full V on failure is a little worrisome IMO.