Update to RedOne Data8 above:

RedOne Customer Service 1909 Line is really bad .. could not connect for over 12 hours now. The staff are friendly but I guess their line got problems.

Since I was promised that RedOne will match my International Roaming and Credit Limit from my Post Paid when I MNP over ..  it was with some hassle.

The thing with RedOne are, increase from default credit limit of RM 50 will require deposit and same goes with International Roaming but International Roaming deposit is RM 300 !!!

RedOne registration method is first to activate or MNP customers to their basic default accounts. Once the line have successfully MNP or activated, the agents will have to apply for whatever to match MNP service like credit limit and international roaming.
This is when the hassle starts as RedOne can reject it and ask you to pay the deposit.

I do not know if this is the method Redone use to get more customers and to screw them over deposits ?! With some arm twisting, I manage to get my international roaming !

If you are not satisfied, you have 7 days from the day the line got active to port out. This is in their TnC.

it follows celcom coverage. not bad at all, to me. 

The other option that I did not explore since I wanted to try Redone was to MNP to Tune Talk, buy validation 365 at RM 28 and weekly RM2 - 100MB data.. it will come close to Redone where you get RM 8 for 500MB in the Redone Data 8 plan. Weekly RM2 - 100MB data is recurring so you do not need to do it every week.

Tune talk will be cheaper for calls if calls are more than 2 minutes average but there is only 1 cent difference anyways.

Tune Talk customer service has been great on phone and on Tune Talk FB / FB PM. I manage to help a friend to complete the MNP thru Tune Talk FB Messenger.

data8 is the cheapest I could find for 500mb of data  unused data will be forfeited