What manufacturers' model numbers are the best UPS's ?...

a. Best UPS's.
What manufacturers' model numbers are the best UPS's uninterruptible power supplies for iMac Apple computers?...
b. UPS's. Best buys.
What manufacturers' model numbers are the best buys for savings on UPS's uninterruptible power supplies for iMac Apple computers?...

That is a very difficult one to answer because everyone has different needs. I would recommend APC branded UPS's, they have a tool that can help you select which model is best for you.
The URL for that site is:
http://www.apc.com/template/countryselection.cfm?ref_url=/tools/upsselector/index.cfm
Regards,
Roger

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