may i know what is the best combo for credit card as of now?

petrol cards that i own
uob one, maybank islamic ikhwan mc,cimb cr mc, hsbc amanah mpower visa,m2c amex gold.

petrol reward cards that i own now
petronas mesra card, petron smiles at times pump ron100 quite costly as hard to find those with ron97, currently pumping bhp ron97, also trying shell as well, but vpower racing is even more expensive than ever,