Ars Technica

Choice between APC Back UPS Pro, Smart UPS, and Opti-UPS ES-series.

I'm trying to choose between the:<P>APC Back UPS Pro 650VA ($242)<BR>APC Smart UPS Net 620VA ($267)<BR>Opti-UPS PowerES 650VA ($160)<P>I threw in the Opti-UPS, but if ...