For efficiency best to get more than one card since cashback benefit in particular is capped. Unless your spending is always <1k then just get OCBC Titanium and forget about it (Maybank2Kard is better but only where AMEX is accepted).

Even my spending <1k I get both this card and OCBC to maximize cash back (and recently Stan Chart for the 15% petrol as well). If the card gives you more than RM50 benefit then confirm worth.

What I'm interested to know is, can we change back after the first month gets charged?

Because currently if I'm getting 5% cashback on my RM149 Unifi bill from OCBC, then switching to this loses me money if I stay more than 2 months, since their AMEX won't autobill on weekends.