I live in Hyderabad and have been using Su-Kam for more than 2 years now. It is a highly durable product and provides great power back up. I was using another brand inverter earlier which I had to discard after 6 months as it was giving me so much of problems and the service centers were highly unfriendly.
I was recommended by a colleague to purchase Su-Kam Sine Wave, which may be the best advice I have received till date. The inverter has been functioning flawlessly since the past 20 months or so. The battereies we purchased were also Su-Kam.once faced slight problem but it was taken care of within 24 hours by Su-Kam highly efficient service providers.
For no reason is Su-Kam a leader in power back up systems in India.