Hurm, just to add a point. Banks will not like people who pay in full because your risk of default is low. Means they cant charge you interest on your remaining balance.

If you are someone who pays in full, my suggestion will be a debit card. They now come with Visa or Mastercard, and works just fine like a credit card.

Also, you dont need so many cards now, especially for petrol rebates and all. Most cards (for e.g. CIMB's Directaccess) offers 5% rebate on the first day of the month, and 2% rebate on remaining days for petrol. So the trick here is how to choose the best card for you, instead of 10 cards for 10 different uses.

Just my opinion.

Try searching their website. I just have this feeling you guys just sign up for cards without checking its actual details.