Need a UPS for back up power to my ADSL Modem + Wi-Fi Router. Can be quite basic. Also should not shutdown on low load condition 
I have narrowed down to SuperComp(Rs 1100) , Powersafe(Rs 1400) & Numeric(Rs 1450). All are 600VA UPS. Any idea which has better service and warranty ?

I have narrowed down to SuperComp(Rs 1100) , Powersafe(Rs 1400) & Numeric(Rs 1450). All are 600VA UPS. Any idea which has better service and warranty ?