Thanks for the speedy response and congratulations on all your research. Much appreciated.

Hi Chris,I have an Amex Explorer and a Velocity Platinum Visa card. I use the rewards from both for SIA first and business tickets. As far as I can see, the only reason to keep the Amex card after April 15 will be if I need to exceed an A$8,000 per month spend. Do you agree? Could I do better?

Great conversation! As the recommendation seems to be "call the airline" in so many comments, how about giving us a list of numbers for the main airlines' award travel desks?. Not surprisingly, it isn't particularly easy to find them when you are hunting for them on their various websites!

Chris - I am confused and have two questions! First, Which card will give me the better rate on conversion from dollars spent to SIA miles - a Westpac Altitude Black or my existing Amex Explorer? Also, I have an old Westpac Earth Black which gives QF miles but I want to switch entirely to SIA f...

You might want to think twice before upgrading to Business on Virgin between Denpasar and Sydney.  I flew VA70 last week and they don't have any form of footrest in Business on that night flight.   Unbelievable.   Altogether a very disappointing flight.