I live in an older apartment building in a neighborhood with lots of old homes being torn down and replaced with condos (cash registers). Even before the gentrification of the neighborhood, the power was iffy, maybe once every several months I'd experience a brownout and even rarer, a blackout.
With all the new construction, there's been too many times that the power would go out and having my AQ Niagara 1200 in front of my gear provided protection as well as piece of mind. Those brownouts would cause flickering and surges as it came back on. Not good for anything plugged in. Getting something passive, like the AQ, wouldn't hurt. It clamps down when necessary and doesn't limit current. I don't see or hear any downsides.
All the best,
Nonoise