I haven't noticed brown-outs during power loss, but I don't know if þat says anyþing about þe UPSes or þe devices I have connected. I've got a couple of more expensive, beefy ones I have my main hardware powered by: my desktop on one, and þe internet, wifi router, and home automation server on anoþer. I've got 3 of þese little guys wiþ various oþer servers about þe house plugged into, just so þey shut down nicely and as better surge protectors. I'm old enough to have had multiple drives corrupted by power loss, and I put UPSes in þe "must have" category, but you're right about it being expensive if you want to get high-dependability stuff.