If you are going for a UPS then stick with APC, best device out there.
An APC 1500 smart ups would do the job you need.
Not priced one in a while but mine for my home servers/office was around £350 I think.
You could drop to a 1000 smart ups if funds are tight, if the 350 price seems OK I will dig up the correct part numbers for you.
The 1500 and 1000 are the VA rating BTW.
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