Solar panel

Hi folks, my family is trying to get solar panels installed in our home and so far we were suggested 3 companies. 1) Tata Solar 2) Adani 3) UTL Now Tata is the most expensive with 2.6 lakhs for a 4 kwa connection. Adani is for 2.4 lakhs. Now my father is in favour of Tata because the guy he talked to says that Tata is the best in quality and service whereas a known of mine says that Tata is not good at all. So if anyone has availed the services of Tata or Adani, please help me make an informed choice. Also the guy who quoted us Adani says we'll get a subsidy of 1.5 lakhs but my father says the max subsidy anyone can get is 1.08 lakhs, so can anyone also clarify this. And obviously if anyone is into this field please connect with me as we are looking to get the installation done next month. Thank you all.