I have an old APC Back-UPS RS 1500 with the additional battery pack that I've been using for many years (maybe about 10-11 years). I've replaced all the batteries once. I do not use any of the APC software, instead, I just use the built-in support of OS X.
This UPS helped me greatly during Hurricane Sandy. It gave me time to shut down my entire system when we had our blackout which lasted about a week.
When the power came back on, some things in my apt that was not connected to a UPS or surge protector died from the initial surge. Everything that was on my UPS was fine.
So, do I recommend a UPC? Most definitely!