Good UPSs don't fail with sparks that could start a fire. I've used a number of them over the years (APC, Belkin), and the only thing that seems to fail are the batteries, which wear out and need replacing from time to time. As for surge protectors, there are two kinds, the MOS ones, where the MOS part takes the hit, burning it out a little more each time, and series mode ones, which use a large inductor and don't wear out (they're also hard to find, heavy as snot, and expensive). BTW, a lot of shills copy their reviews onto many sites, so just because you see it on multiple sites, doesn't mean it isn't from a shill, nor even that it's true. It's not called the 'net of a million lies' for nothing :)
I live in Oregon, and I'm an engineer.