Hello all - So my 2017 27" iMac finally arrived (i7, 512SSD, 16GB, Radeon 580). I found a good deal on the CyberPower GX1325U UPS at my local Fry's Electronics. It supports PFC and all that, but I am admittedly an amateur when it comes to battery backups. Any advice would be appreciated. Here is the info. from CyberPower Thanks so much for any input!