This plan will be good for those having 2 mobiles.
DiGi Internet - DG Smart Plan
1st Number can be dedicated for voice calling.
2nd Number (Digi Internet DG Smart Plan) can be dedicated for data as it is unlimited.
For those who surf net more than voice calling.. DG Smart Plan also very economic as compared to Maxis Voice+Data. Further Maxis data is not unlimited and any usage beyond the quota is damn expensive.