I personally recommend HSBC Premier. Their service, RM’s and general branch availability is much better. They have better Global Transfer services simply by being the much larger international bank. The DBS vantage is slightly better in regards to forex as it will get you a net gain of 2% instead of 1.8% but you will also have to pay fees of 20k while HSBC Premier is free. But you do get 0 forex in Singapore and a few hotel memberships to choose on the DBS Vantage.