Anyone using Diners? The conversion rate is HKD6=1 AM and there is free access to Plaza Lounge as well. The conversion rate is better than AMEX CX and Citi PremerMiles in HK. But Diners is not as popular as AMEX and VS/MSTR.

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Personally I don't like Citi PremierMiles as they only convert the points to AM in every 500 units, i.e. HKD4000, unlike AMEX CX that convert every single mile on monthly basis. If one day I want to quit from the Citi PremierMiles, I probably need to spend a few thousand dollars more to top up the points for rounding up this 500 miles.