I need to replace my hot water heater. I have chosen to go with a Quick Nautic Boiler 40L from AHOY CAPTAIN'S website. It comes either 600 or 1200 watts. One of members recently replaced theirs with the same unit and I wondered which wattage they replaced it with. Is there any reason not to go with a high wattage given the size of our generators? Thanks. Pat SM123 Shenanigans