Just to return to the original theme/title of this thread (copy-pasting from my reply in another thread)
Posting this because my experience may be useful to people confused about (1) choosing between a LTF DCB and a paid Infinia OR (2) people considering a move from Visa to Diners Club.
I hold a LTF DCB and have found the DCB to be a good card overall. However, I suddenly experienced a few offline rejections, in a tier 1 city, for important spends. I am not comfortable with this uncertainty over whether Diners will be accepted in a particular establishment or not. I also found myself wasting time in new places wondering whether to swipe the DCB or a backup Visa card (and tap-to-pay never worked).
I wrote to HDFC requesting an upgrade to an Infinia. Grievance Redressal said ‘No’ because of ‘internal guidelines’ - I suspect because I upgraded to the LTF DCB only 3 weeks ago. From this nice forum, I saw two mentions of writing to Mr. Parag Rao - something that would not have occurred to me (thank you). I did so and just received an email from Priority-Redressal-Chairman/MD-desk approving this upgrade.
While Diners acceptance is fairly good, my message is to not rely on it as your primary card - even in major cities. Also, I miss the tap-to-pay feature which I find extremely convenient for small amounts.
I didn’t consider a Magnus card because (a) I have infrequent travel, (b) my spends are below 1L a month and (c) I have dealt with Axis customer support for many years.