My experience using Amex Charge Card is not bad at all. I getting the 15% cash back for the past 2 months, RM 150 for each months (you need to spend RM1.5K min on respective shopping mall to get the full amount) To buy petrol I recommend to buy the petrol at Shell as they except AMEX + you will earn the points from Bonuslink. For Mobil/Esso, there is only certain station that allow you to used the AMEX. Shoping at Jusco, cold storage, Giant, Tesco, IKEA, all accept AMEX too