Finally going to switch from PC to Mac. I won't be needing Retina today so I went with a BTO 27" iMac i7, 3TB FD, 4G GPU, Late 2013. Now I want a UPS Battery Backup for it. Leaning towards APC, but started to read reviews on Sine waves, Buzzing, Restarts, loud fans.. On iMacs. - What does everyone use and recommend for a 2013 iMac? For: iMac 2013, Ext HD, Printer, 2nd monitor.. APC BR1000G - 1000VA/600W or Cyberpower what? (8+ outlets desired) For: Airport Time Capsule 3TB, A/V Receiver, TV, Cable Box, Xbox.. APC BE750G - 750VA/450W or Cyberpower what? (10 outlets desired) Thank You!!