We have only had 2 power outages in the past year and when I rewired house in 07 ran a dedicated line to TV location in bedroom as well as living room. 95% of viewing will be HD from my VIP 211 via HDMI (still works) with OTA. 5% or less will be analog channel 60 from my VIP 622 in living room. I don't think wife would go for a battery back up sitting on floor in sight. TV is wall mounted over her dresser. I may work on putting one in my closet and running new lines in basement.
We love the TV right out of the box and have only lowered the backlight down to 3 on standard, the rest untouched.
Mike
Then you definitely shouldn't have a problem with robot audio.
In regards to settings, as many different settings I've tried (whether from Cnet or users at AVS forums) I always find myself going back to the defaults with a couple minor tweaks. They're not perfect IMO, but for my casual bedroom-viewing purposes, they are more than serviceable.