I have used both SMRT & CDG meters. Both also user friendly
but SMRT meter is till the best why? coz if u press K3 & K4 (
if im not wrong ) , u can key any amount of fare u want.
The diff between SMRT & CDG is SMRT encourages disposal ,
thats why they put a meter for u to choot whereas farking CDG is
sibeh kia su and kia si , their meter options very very
limited.
Pte booking - 100 is only up to $5. wanna key in anymore u gotta
press location in which this case , the receipt will look very very
'unsightly' with all the charges.