Actually depend of your budget and your usage.
you must know your purpose 1st,

If you did a lot of call for all network and standard use for data,
i advise maxis one plan rm128-unlimted call to all network and 2gb data.

If you did a lot of maxis call and less call to other network,lite use for data,
i advise u get maxis one plan lite RM78-unlimited maxis call with 1GB data.

If you did very less call but need standard data,
Digi smart plan 50 (2GBdata +100 minit call)or smart plan 78 (2gb+1gb apps)is better.

Most important is,you must know what is your purpose 1st,only you can choose the best plan.