I have been using Airtel 4G from a long time and it provide good services Even in villages where other networks like jio are not available.
plan rates little bit higher than Jio But it has better voice quality than jio. I have never faced any network related problem as airtel have spread all over India. customer care is supportive and Airtel customer care centres spread all over India. we can even deliver your new Sim card to your home.
So overall I would recommend you to get Airtel 4g