i am using following online banks:-
1) mbb - high volume, alots of merchant (sometimes could be diff for users)
2) cimbclicks - good, they keep improving, used to have very slow connection
3) ocbc - good and recon.
4) pbb - good - high security - they block me after 6 mths of inactivity, got to re-register
5) citibank - good and user friendly
6) ambank - avg features
7) std chart - stop using due to limited features
8) diners - stop using due to limited features
9) hong leong - stop using 1 yr ago. due to upgrading, always cant login
10) UOB - i recon. stop using due to cancellation of cards
11) EPF - not bad

overseas bank have 24hours login.

PS: always keep favarites of you login, do not click link from email.

yes david83, been using a lot of internet banking service...
havent include international provider such as paypal, e-gold, moneybroker