Luminous is a reputated and trustable compay in inverters and batteries.
I have been using Luminous inverter from many years.And having no complain about this.Price is also lower than most of the other brand inverters.There are five rooms including lobby and kitchen in my house, and during electricity cut we never face any kind of problem regarding to the voltage.
It stable the voltage well.Maintainance is totally free and it is very long durable product.So, I can say it is easy to use and user friendly product.