I would NEVER allow one of those "inverter" in my house. They are usually made by Panasonic. They disrupt all UPB signals, cause incredible noise on the powerline, interfere with WiFi the most, and if that wasn't bad enough, I've never had one survive more than 3 or 4 years.upstatemike said:I think a dial is more important to me than power level changes since I don't often use that. I'm going to restrict my search to only look at models with a dial and inverter power.