I know we had a similar descussion, but I need some further help, please. After determining I realy don't need a battery back up, I am looking at line conditioners for my plasma, dvd, avr, and sat reciever. I called tripp lite and they pointed me to their "LC1800". After going to Amazon and reading one of the 2* reviews [ dated feb 2012], I was realy disappointed to find out it did not shut down the equipment with either high or low voltage changes, just kept adjusting the power, [ especially the low end] . There was also complaints of "hum" and some clicking. [ by other posters] Tell me what you have and if your happy. Not going to spend a huge amount, either. [ less than 300.00] to "1953", does your Panamax have the above issues? I would be interested in knowing. Is your model a line conditioner [ has to address high and low votage, and shuts down power to equipment especially during brownouts.] I just spent the last few hours reading on line and Most address equipment that is way out of my price range. frustrated, to say the least.