Hi Calkel,
So you mean just change all the cash here in Singapore?
Me? I have spares. So if it is not a weekend arrival, i will make a point to go dbs taiwan.
The nearest branch near taipei main station, is at 善導寺station.
Rates can be viewed at DBS
Then again, it really depends on how much you are going to change too.
Some prefer to keep SIN$ and change there when u really run out.