I was looking for a Mecer 5000W hybrid inverter, but they are literally sold out everywhere. The reason I wanted it is because it is the only silent inverter I have ever come across. I am now being offered the Luxpower 5000W hybrid, but I am nervous in case it is noisy. None of the suppliers have been able to advise me as to whether it is noisy or not. I would so appreciate some advice from anyone who has one?