This is just share my experience with Standard Chartered Credit Card(Lifestyle).
Using this card from last 3 years and have not faced a single problem till date. Its acceptability all across and very simple cashback offer make life a bit easy. It gives 2% points award which in turn is 1.2% flat Cashback(irrespective of nature of transaction), redeemable only at Lifestyle or Auchan.
Also time to time its keep on running 5% additional cashback offers which is quite lucrative.
Customer Care team is also quite supportive. But a bit difficult to reach them with minimum 5 mins have to stay either on hold or in the process. But I had to call only once in last 3 years that also just to understand one special promo offer.
With no charges at all i.e. Lifetime free - I will recommend this Card to all