can somebody please help me decide between umobile prepaid vs tunetalk prepaid?

i am searching for my own use (getting an android phone soon) and for my aunt who is looking to buy samsung galaxy tab.

for myself: i have wifi at home, i don't usually call or sms much, and will probably use most of the data on the go for twitter, viber, and occasional web browsing. house is in usj subang jaya.

for my aunt: she already has celcom broadband so she doesn't want something with high monthly commitment. no wifi at home. the tab will mostly be used as her personal organizer (she's a doctor) and synchronizing her calendar. house is in kubang kerian, kelantan.

i saw that both list 5sen/1mb for data but is there anything else that makes one superior than the other?

However you need to monitor how does your phone connect to the net. In the PAYU of 5 sen per MB, the minimum block is 5 sen per MB. So if your phone connects and disconnects each time it checks for updates, you could be paying more as its charged 5 sen per connection regardless of how small the transfer is.