Hi - this is Jonah Cagley from CyberPower Systems. I recently read this thread and wanted to let you know that CyberPower has recently launched a new UPS line that supports equipment with Active PFC power supplies and standard (or conventional) power supplies. The new UPS line is called Adaptive Sinewave UPS. It's available in both Desktop tower and Rackmount/Tower models. Our new waveform design not only supports Active PFC power supplies but it is the most affordable UPS solution in in the market for this critical compatibility issue.
Depending on the model you require, you can save up to 50% compared to pure sine wave. I encourage you to visit http://www.cyberpowersystems.com/about-us/news/adaptive-sinewave-ups.html
to learn more and check it out for yourself. Please let us know your feedback when you have a chance. We'd love to hear from you.