I'd be interested in feedback as well as I'm looking to replace an older unit. I thought to just go with another APC (or if I was less lazy to replace the battery that's in it). The annoying thing with the current one is that even w/ an alarm defeat it still sounds off as it's getting to the bitter end, and the super shrill beep is very annoying and particularly freaks my dog out. So true totally silent no alarm option would be high on my desired feature list. I know when the power goes off a la Dylan's "you don't need a weatherman to tell you which way the wind blows".