Tata card has been a good experience for me. I admit that in some retail outlets their machine to redeem points does not work. But so far, Ive had a lot of benefits. Ive got good discounts on tickets, bought a phone free, an oven virtually free, stocked my groceries more than once for free etc.
Customer service isnt too vigilant and that can cause problems at times but they rectify the issues too. So far its been a great benefit.
I have a titanium card and Yes - Im not a tata employee or spokesperson - Im an aam aadmi category middle class citizen.