What is the ideal credit card to have in Singapore???

hiiiii....
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I have an associate who is working full time now in Singapore. She wishes to seek a credit card in Singapore, however has no clue which ones are best as far as focuses, specials (like rebates at stores), and whatnot...
Any prescriptions?
.............
THANKS!!!!!!!!
.................
I have an associate who is working full time now in Singapore. She wishes to seek a credit card in Singapore, however has no clue which ones are best as far as focuses, specials (like rebates at stores), and whatnot...
Any prescriptions?
.............
THANKS!!!!!!!!