it actually depends on where u stay.... i stay in pasir ris,
where there is no discounts, but as i often go serangoon gardens, i
pump my petrol there.... 6%.... not bad if u are thinking abt the
long run.... and abt which company, it all depends on wat kinda
petrol u wanna pump, if its normal 98, then i think you should
choose those that is easily available, and that u know the
existance in various parts of singapore, just in case u run out of
petrol at places u seldom go.....
just my 2cents worth.... 