I used to have a APC UPS, it worked fine for quite a few years but suddenly stopped working. I heard good things about Eaton, and bought one, but it has been a disaster to be honest. I use it on a fileserver, and the capacity should be good, but when i tried the new one from Eaton it cut power during startup, and restarted the machine several times, maybe some peak power thing, but the APC what 650VA, and the new one is 850VA and the APC worked fine. For some reason it caused some data loss, which is certainly a big drawback when preventing data loss is the main reason for having it in the first place. I had a power failure, and the Eaton seems to have handled shutting down the machine, but after the failure it trips the circuit when it is plugged in. Does anyone have some other UPS to recommend? As of know the UPSes has caused more power outages than just not having one.
One thing that I have used is an inrush current limiter. It works, but there are few options on the market that are pre made and relatively affordable. An auto bypass relay that selects between UPS and outlet power also does wonders for maintaining power to your computer(s).