m2u savers: need at least rm2k daily remaining balance to "activate" the interest, if dropped <rm2k, no interest.
m2u savers-i: below rm2k balance will also get 0.40% p.a. interest. if >rm2k, interest comparable to m2u savers.

yes, m2u savers/savers-i can be opened together with your basic savings account. try it in m2u
ocbc smartsavers' interest depends on the deposit amount and if there's withdrawal. if no withdrawal, you get higher interest based on the deposit during the month.

read the links i gave you earlier.

interest will be calculated/accrued over daily remaining balance, and will be credited on monthly basis.

mind you, interest % is per annum (p.a.) basis.

which bank are you referring to? you never said which one to discuss.

both banks have diff requirement: maybank's no need to deposit, must maintain balance >rm2k. ocbc's need to deposit to trigger the tiered-interest.

for maybank
^-- yes correct, that's roughly for monthly interest gain. for 2k, u gained about RM3.xx per month, without any deposit.

for ocbc
^-- same as above. that's why it'd be better that you deposit rm800 as early of the month so that the interest will calculate early

for me, i always deposit rm1k during first working day of each month. example, tomorrow 1 July, i'll deposit 1k and leave it untouched. by end month, the interest will start calculate on each daily balance, from 1 July until 31 July.

the 1k deposit is just to trigger the highest interest tier 3.05% p.a. 

subsequently, interest is calculated on remaining balance you have, each day, including the 1k deposit

it's kinda confusing at first. 

some general rules (in my opinion lah) between choosing m2u savers/saver-i -vs- ocbc smartsavers:

1) able to maintain rm2k balance: m2u savers & ocbc smartsavers (provided criteria 3 & 4 are met to get the interest).
2) frequent access to deposit: m2u savers, provided criteria (1) is met to get the interest.
3) no immediate need for the deposit: ocbc smartsavers, provided criteria (4) is met to get the interest.
4) able to deposit at least >rm50: ocbc smart savers, provided criteria (3) is met to get the interest.

first choice: m2u savers due to fund accessibility and low requirements, worry-free account management (just treat it like a normal savings account).
second choice: ocbc smartsavers due to higher interest rate, but slightly higher requirements on deposit to trigger the interest tier.

yeah, that too, but since it's fairly new and no customers shared their expererience here

perhaps chrischiang can review this too.

TRUE is flat 2.8% p.a. interest rate. deposit any amount.