Im using celcom exec 50 as my postpaid line,while Maxis as my prepaid,my maxis is cheap enough 2 make call,i dont think i need to shift the plan to postpaid as i dont think i need them .i've heard alot about the hidden chargers by maxis.btw,if u guys can buy sarawk/sabah maxis no,they're way cheaper than west msia no.trust me