You know what they say about opinions, and Dave's opinion is as valuable as mine, but personally we won't touch APC much anymore. We went to Liebert years ago. It just depends on what you want and what your budget will allow. You might want to research the switchable UPSs vs. the constant supply. Although this isn't exactly how it works, the switchable supplies let you draw normal current, and then during a power failure swtich to battery back up power. The switch is so fast you don't see it, but some systems like Inter-Tel Phone Switches which are very sensitive to brown outs can be affected. The other type UPSs feed a constant supply across the batteries and when the power dies, there is no change over time gap.