Solar Rooftop Info Needed

If anyone has installed solar rooftop, can you share from which vendor have you done and recommend any vendors or share their pamphlets so that it can help compare prices? Also share how much KV have you installed and give an estimate as to how much is required upon how much usage? It would help out alot. I have also been hearing adani panels are better than waree in terms of solar electricity production. Thanks in advance!