I cannot say that my answer is definitive, but from what I remember, the LIC IDFC Select card has the best value in terms of rewards (in terms of actual rupee value) and additional benefits.
But I would wait for other folks here to reply before pulling the trigger on it because I have not been able to acquire it. Every time I tried, I either got an error on the website or, was told by the IDFC Bank employees that this card is only being issued to LIC employees at the moment.
Let's see if anyone else was able to get it.