I bought iphone 4 bout 3 months ago and now decided to get one for my wife too. I am on rm100 plan and family rm30 plan on her. How should i suscribe another valuer plan?

Should i cancel rm30 family plan and suscribe 2 value plus rm100? Or is there any better deal? Most of the time, i didnt call more than rm50 permonth. Data also never exceeded 1gb.

Is this the wiser choice below?

Retain existing family plan and add rm30 data plan monthly? Monthly neef to pay ivalue rm100+ family plan rm30+ data plan rm30. Hence i need to pay rm160

Or 

Just cancel family plan and suscribe 2 ivalue rm100. Hence rm200 monthly.

Or do u think its even better to go for more attractive celcom98 plan?