Now that I have my new fully loaded 27" iMac home and getting the TLC it rightly deserves, I'm in the market for a good UPS solution. What are the best recommended UPS that would keep the unit up and running for a couple of hours and allow me to program it to shut the iMac down before the battery drains. I had a look at some of the APCs on the market but the PowerChute software is Windows based. Just wondering if there is a Mac version out there somewhere!