Then I'd opt for the better one, because you don't see all brownouts, only the ones that are long enough to affect lights and more sensitive devices. I have one touch light that would go out when everything else would be fine. So you most likely have very "dirty" power, at least in the room you see this going on.
I'll also add that since putting my UPSs in, occasionally I'll have them click. It's not registering as anything on the software monitor, nothing I can see via lights, but I'm sure it's breaker or whatever they use to step in and keep things clean.