Which telco is the cheapest? Maxis/Digi/Celcom/U Mobile

I am thinking of changing my telco service. Currently I am park under my friend supplementary line under Maxis Value 30 and my wife is maxis prepaid RM 30.

Will I save more if I choose Celcom RM 50 + RM 5 ( Supplementary Line )???

Let's look at the comparison:



Source: http://www.horlic.com/cheapest-postpaid-plan-for-couples-comparison-between-celcom-digi-maxis/

Source: http://www.rmvalues.com/mobile/mobile_post.html