In my personal opinion,
to maximise this, should register and put 100k ADB, and use 500$ debit card, so this 100k gets min 2.2%
any excess above this 100k will only get 1.55% max, so no point.
put all others in esaver for 1.7%
above applies only after whichever can and already utilise at BOC Smartsaver 60k ( 3.55% ), MB Save-up 50k ( 3% ), UOB One 50k ( 2.43% ) , OCBC 60k ( 3.25% with increment, 2.25% without ) and/or Stanchart Bonussaver 100k ( btw 2.05 to 3.05% )
thought if want the free air tickets, need to deposit $200k min.?