HDFC Diners Black alternate options?

I have been using diners black for flight, train and bus booking via payzapp. I get decent points for these. Get 16.5% reward points for bus and flight and 10% for train. Cap is 2500 reward points in a day and 7500 in a month.

Is there any other credit card which gives better benefits than diners black?

PS - This card is lifetime free for me.