I recently bought a Earthsafe whole house generator and didn't notice much of a change. To be fair, it was purchased second hand, and has a variable frequency output, so I can't be sure exactly where the dial should be set. Does any other member have a Earthsafe unit? If so, could you take a pic of where your frequency knob is set at?
If I can't get this unit to improve, perhaps I'll try the RR-77 instead.